TRU (and eBay) tend to be the exclusive location for these in America, but not always. Sometimes K-Mart gets 'em.

MASTERPIECE OPTIMUS PRIME MP-10: 7/28/17: TRU in Amarillo TX, $160. 8/3: Torrance CA.

Other Store Exclusives

CYBER BATTALION: Not exactly a single store exclusive, but seems to be limited to "second tier" retailers like Walgreens or Meijer. These are largely Legion designs scaled up to Voyager size, but with extra joints, changed details, and so forth. Some are entirely new, but they draw inspiration from Legion-style transformations. Sold in non-window boxes at Deluxe price. 9/3/17: Bumblebee (movie-style Legion design, but with G1-inspired head) at Walgreens in Amarillo TX. Cosell is Megatron. Someone else in town spotted Jetfire and Prowl at a Walgreens I didn't check today, hopefully they'll still be there tomorrow. 9/4: Well, Jetfire was. It was stuck between plush animals on the top shelf of the cleaning supplies aisle. 9/6: Optimus Prime (based on the Legion Generations truck that keeps showing up in Dollar General) has been spotted in Brooklyn NY, alongside BB, Jetfire, and Prowl. So far no one has found a Megatron, despite it being on a lot of co-sells. 9/8: Optimus spotted by someone else at the Walgreens in Amarillo that I never visit (a part of town that's far enough away and has few enough draws for me that I almost never go there). 9/21: Walgreens in Simpsonville SC.

TITAN GUARDIANS: Another "maybe not a store exclusive" deal, the second wave of 6" tall Titan Guardians has hit Walgreens. Optimus, Sideswipe, and Bumblebee are held over from the first wave, with Strongarm and Grimlock added in. (They also have "value" Star Wars action figures in the same size and sort of packaging.) 9/10/17: Walgreens in Amarillo TX. $6.99 each.

CHAOS ON VELOCITRON: A Toys R Us exclusive box set, a mix of redecos, retools, and one totally new mold, for $99. Includes Laser Optimus Prime (G2-based deco of the current Voyager figure), Quickswitch (redeco of Six Shot), Nautica (heavy retool of Blurr), Fastclash (new mold, Fastlane name was unavailable), and a Titan Master Rodimus Prime. 3/24/17: El Paso TX. 4/2: Torrance CA. 4/5: Up on TRU.com. Expect it to go in and out of stock over time. 4/8: Iselin NJ. 8/2: Peoria IL, Bloomington IL.

SIEGE ON CYBERTRON: BBTS exclusive. Magnus Prime (the Japanese tooling of Powermaster Optimus Prime), Tidal Wave (Broadside redeco), Metalhawk (Triggerhappy redeco), Pounce (newish mold), Titan Master Thunderwing. Possibly some retooling on Tidal Wave or Metalhawk. Currently slated for late July 2017.

WINGSPAN/CLOUDRAKER: I guess we won't get four $100 exclusive box sets? Walgreens will be carrying a two-pack of the remaining two clones, spotted in packaging (not yet in stores, AFIACT).

DOLLAR GENERAL KRE-O: As part of their Halloween reset shipments, stores are getting two new $12 box sets, each of which has an Autobot in a vehicle versus a Decepticon (Strongarm vs. Springload, Sideswipe vs. Hammerstrike, each with a "capture car" inspired by the Autobot's vehicle mode). Some are also getting carded sets of armor-up Kreons that come with accessories to turn them into more "regularly" proportioned robots. Optimus Prime, Bumblebee, Sideswipe, and Grimlock, each in three different color variants (regular, arctic, desert). No Strongarm, sigh. 7/27/17: Some stores have these out already, but since part of the shipment has an August shelving date, many are sitting on the truck until they can do it all at once. 7/28: Picked up the $12 sets in Amarillo TX. 9/4: Found the "Oversized Kreons that transform" sets at the same DG in Amarillo, they're ALSO $12, annoyingly. Picked up spaceship Megatron, Ironhide, and Grimlock, left Shockwave (same as the TJMaxx version) on the shelf. 9/8: All four at Walgreens in Amarillo TX. $9.99.

    On a routine patrol, four 'bots in stasis....

MINI-CON WAVE 1: Same price point as the Basics, but these are partner animals that turn into tools, called Rescue Mini-Cons. Servo the dog-bot turns into a drill for Boulder, Drake the dragon-bot turns into a water cannon for Heatwave. 12/22/15: Target in Amarillo TX. I passed on them at the checkout because they'd been mis-entered in the system as costing $14.99. 1/14/16: Target finally fixed the price, by which time only one Servo and no Drake were left. Servo has no articulation other than his tail (which is the weapon grip peg). 1/24: TRU in Amarillo TX.

MINI-CON WAVE 2: Drake and Servo, plus Valor the Lion-Bot (becomes cuff/clamp tool). 10/28: TRU in Amarillo TX.

MINI-CON WAVE 3: This one's tricky, because several have shown up online but not necessarily in stores. There's Sequoia the bear, Swift the Cheetah-Bot, and a single-pack version of Fireplug the Dalmatian. Swift is clearly meant to go with Bumblebee, Sequoia with Brushfire, and Fireplug with Heatwave. 5/2/17: Swift has been available on HTS for a while, I forgot to mention it. Sequoia at TRU in Amarillo TX, but no Fireplug or Swift.

THE FORSAKEN WAVE: So, Target is in the middle of a reset, has clearanced the older Mini-Cons to $1.49...and is getting in a wave of Swift and Silverback. You may or may not be able to get them, but they don't have the same SKU as the clearanced ones and might not be in the system at all. Check the clearance areas, stockers tend to dump things there when they can't find a matching peg. 8/4/17: Found at Target in Amarillo TX. I was able to buy a Silverback for $1.49, but the rest of the ones I found were put in back until such time as the price issue can be solved. 9/15: Local Target will actually sell them now, at last, for $4.99. TRU in Amarillo has Silverback but if they got Swift it had already sold out.

FLIP-BOTS WAVE 1: Basically Legion-sized Rescue Bots at the $5-6 price point. Tip them on their back to make the head and arms automatically pop out, no articulation. Optimus Prime, Medix, Hoist, Heatwave. 7/23/17: TRU in Amarillo TX. And yes, I added the "If they ever are" on 7/21. 8/4: Target in Amarillo TX. 8/9: Walmart in Amarillo TX.

FLIP-BOTS WAVE 2: Blurr, Chase, Sideswipe, reship of Optimus Prime. 9/15/17: TRU in Amarillo TX.

FLIP-BOTS LAUNCHERS: Bumblebee Quick Launch Garage with a little spring-launcher thing that sends the toy through a garage facade, jet-mode Airport Blastoff Blades with a runway-themed launcher. Blades is severely shortpacked. 7/29/17: $9.10 at Walmart.com. 8/11: $12.99 at both Target and TRU in Amarillo TX. Blades seems to be one per case.

FLIP-BOTS CONSTRUCTION TEAM: Boulder, Salvage, and new cement mixer character Mortar (mostly orange). 9/21/17: Available on HasbroToyShop.com for $16.

BASIC WAVE 9: This is all repackaged stuff from the "Energize figures with unposeable partners" line, but it shuffles some of the partners to be correct. Optimus with Cody, Chase with Chief Burns, Boulder with Graham, firetruck Heatwave with Kade, helicopter Blades with Dani, and Bumblebee car gets to be with Doc Green. 1/7/16: TRU and Target in Amarillo TX. 1/14: Walmart in Amarillo TX.

SCOUT WAVE 9: Bumblebee (black deco dinosaur), Bumblebee (VTOL jet), reships of older figures. 4/22/17: Jet Bumblebee spotted at Walgreens in Amarillo TX. Wave may also include Heatwave the Fire-Bot, a two-headed dragon currently available on HTS. 6/18/17: Both Bumblebees, Brushfire, Heatwave dragon, blue T.rex Optimus, Quickshadow, Morbot, and Boulder are all part of Walmart's TF5 aisle display in Amarillo TX. 7/21: Target in Amarillo TX.

EPIC WAVE 2: $10 price point. Repackaged Heatwave and Boulder, new hollow-and-non-transforming molds of Blurr and Salvage. The new ones suffer heavily from lack of paint applications, however, even compared to the original four. 5/27/15: Walmart in Amarillo TX. 7/2: TRU in Amarillo TX.

EPIC WAVE 3: Adds High Tide to the mix. 6/8/16: On Kmart.com, but not available for sale yet. 9/30: High Tide and Bumblebee spotted at TRU in Amarillo TX. 1/8: Also at Walmart in Amarillo TX.

EPIC WAVE 4: Adds Quickswitch. 6/18/17: All of Waves 2-4 are part of the TF5 aisle display at Walmart in Amarillo TX.

COPTER CRANE BLADES: Another $20 "Mega Bot" class figure, a somewhat deformed vehicle mode Blades with a big hook. Packaging shows him lifting an as-yet-unseen ATV Rescue Bot in vehicle mode. 12/20/16: TRU in Amarillo TX.

RESCUE SETS: A Scout-class Rescue Bot, a human figure, and one or two Mini-Cons that combine with each other, the Rescue Bot, or the human. $20 price point. Arctic Rescue Boulder (Snowcat) with a drill snowmobile and brute arms that combine into a Yeti named Windchill, or the arms can attach to parka-wearing Grant's backpack. Rock Rescue Bumblebee (4x4 offroad truck) with eagle (Talon) and lion (Hunter) bots that can combine into a griffin, and act as wings and a crane for Cody. 1/19/17: Walmart in Amarillo TX.

KNIGHT WATCH BUMBLEBEE: Mega-Bot sized Bumblebee that turns into a dragon, with two dragon Mini-Cons that turn into axes. The Mini-Cons are named Wingblaze and Freezer Burn, and yes they have fire and ice motifs. $25 price point. Fairly complicated transformation for a Rescue Bot, although the Mini-Cons are REALLY simplistic, no articulation to speak of. 7/23/17: TRU in Amarillo TX. 8/9: Walmart in Amarillo TX.

OPTIMUS PRIME RACE TRACK TRAILER: Similar deco to the 2016 Racing Trailer, but this one is a new mold and comes with Flip-and-Change Bumblebee and Blurr. The trailer becomes a launcher that takes robot mode FnC's and fires them off down a track. No connector at the end for Hot Wheels track compatibility, as far as I can tell. 8/3/17: Up on Target.com (and actually for sale online). 8/11: TRU in Amarillo TX, $65. 8/12: Walmart in Amarillo TX, $49.44.

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    FIDGET IT SPINNER: Fidget spinners with Transformers themes. Character face on the center, wheels or target crosshairs on the lobes. Optimus Prime, Bumblebee, and Megatron (all G1) in the first batch. 9/21/17: Available on HTS, $6 each.

    RiD COIN BANKS: Tall and very leggy hollow coin banks of Optimus Prime and Bumblebee in RiD(2015) designs. Optimus might have movable arms, btu BB definitely doesn't. $10. 9/16/17: Spotted at Walgreens in Amarillo TX.

    GO KARTS: Battery powered little kid go karts in the colors of Optimus Prime and Bumblebee (both G1) with the molded faces of each on the front between the handlebars. $129 at Walmart. 6/21/17: Walmart in Amarillo TX.

    RUBIK'S CREW: A 2x2 Rubik's Cube puzzle in the shape of Optimus Prime's head, with a little body that can plug in for a Funko-Pop-ish figure once you solve it. $13 at Walmart, part of their train/endcap setups. 6/10/17: Walmart in Amarillo TX.

    WATCHES: The first movie transforming watches of Optimus Prime and Bumblebee, possibly with slight redeco, but in Robots in Disguise packaging with the heads of the PRiD versions on the blister card (no remolding, still the movie heads). $15 price point. 5/23/17: TRU in Amarillo TX.

    ALT-MODES: These are blind-box chibi figures. In "vehicle" mode they're giant heads atop their vehicle modes, and pulling a faction symbol tab on top of the helmet makes the vehicle swap out with a tiny marionette-like body (or spin all the way around to vehicle again, it's kinda iffy). Collation is a bit iffy, I grabbed four boxes and got two each of Prowl and Nemesis Prime. The rest of the assortment is Optimus Prime, Thundercracker, Skywarp, Starscream, Ultra Magnus, and Megatron. 7/22/16: Toys R Us in Amarillo TX. In with the rest of the TFs rather than in the Funko kiosk, $6.99 each. 1/3/17: Wave 2 at Target in Amarillo TX. One new mold, Bumblebee/Cliffjumper (identical molds for the two). Reissues of Optimus Prime, Megatron, Starscream. Redecos Acid Storm, Sunstorm, Smokescreen.

    PEZ: G1 Optimus Prime, Megatron, and Bumblebee. Megatron could use a bit more paint (especially on the forehead), but otherwise decent. $2.49 at Toys R Us. 10/31/15: TRU in Amarillo TX. 7/14/17: RiD versions out now, I've seen Optimus and BB but suspect there might be more.

    INFLATABLES: Ross/TJMaxx has some RiD-branded inflatable toys. A bop-bag with Steeljaw on it packed with inflatable Bumblebee-faced gloves (so you're smashing BB's face into Steeljaw), and an inflatable sit-on bouncer. Both $7.99. 7/30/15: Ross in Amarillo TX.

   I've stopped tracking most of the "artifacts" stuff, since Transformers has reached the cultural saturation point where you can be pretty sure there'll be party supplies, water bottles, t-shirts, and so forth readily available.

    HAVEX MACHINES: Folded-up pods that (in theory) auto-transform into fighting vehicles when a Micro-Machines-sized car is rolled up into them. In practice, the car is way too light to trigger the action, even though the "pod" mode is very touchy. One set is a mecha rig (Combat Bot), the rest are various sea/air/land vehicles (Star Blaster spaceship kinda like a B5 Starfury, Mech Ray and Lightning Sub submarines, Mech Bug walker, Sonic Jet and Strike Chopper aircraft). $15 price point. 8/25/17: TRU in Amarillo TX.

    MECH X4: The spoof of giant robot shows on Disney XD gets merch a year or so after the show launches. 8/11/17: Spotted a $20 basic set with the main mech and its support vehicle that combines with it, a larger no-shelf-tag-yet light and sound MECH X4, various rubbery monsters and roleplay gear, all at TRU in Amarillo TX.

    VOLTRON: Toys based on the Netflix series finally hitting stores in January 2017. A mix of non-transforming Voltron figures, lion figures, masks, a big non-transforming Voltron, and a really expensive 16" Voltron sold separately as lions that do combine. Dunno the prices, the store I first saw them at was stocking them on WWE pegs and hadn't posted new prices yet. 1/3/17: Target in Amarillo TX. 8/11: Forgot to mention this earlier, but new metal-including combining lions are now available at Walmart and Target locally, probably most places.

    MARS Converters: $10 large toys, generally found at Walmart and various discount stores (TJMaxx, Family Dollar, etc). Current wave is dinos and dragons, with a red T.rex, a blue sorta-stegosaur, and a yellow dragon. 9/30/16: Family Dollar carrying these as part of their holiday toy expansion. 4/20/17: The vehicle waves are starting to show up again at Walmart in new packaging, with a "Cybotronix" line name in addition to MARS Converters. Spotted the blue sportscar and the gray sportscar in the new packaging today.

    SUPER WINGS: This is a show for very little kids, like "too young for Rescue Bots" level, from what I've heard. At the $10 level there's Rescue-Bots-level aircraft that turn into cockpit-torso'ed robots: Jett (cargo jet), Donnie (cargo heavy lift prop plane), Jerome (fighter jet), and Dizzy (pink female helicopter). 3/31/17: These are finding their way back into non-TRU stores after months of absence or "stick it in a corner somewhere" stocking, and the larger sized Paul is now in the assortment. Cosells indicate Grand Albert, Bello (safari striped bush pilot plane) and Mira will also be available at this size soon, if not already. 5/22: Grand Albert and Bello Deluxes at Target in Green Bay WI. Decided to not try to fit them in my luggage, though. 8/13: New rescue vehicle sets have hit TRU as part of the Fall reset. The main four characters each get $15 sets that use a "Legion" sized figure as the driver, and a vehicle that turns into a mech suit for which the little figure forms a head. Transtectors, basically. Dizzy's Rescue Tow, Jett's Robo Rig (fire truck), Donnie's Dozer (more of an all-purpose construction vehicle), and Paul's Cruiser (Paul displaces Jerome in the main four, apparently). There's also a super-sized $40 Jett's Robo Rig that uses a $10-size "Deluxe" Jett as the pilot and head. They all have functionally the same transformation.

    TMNT MUTATIONS T-MACHINES: Cars-sized vehicles that, when you tap the head of the driver, pop up into a Throttlebot-style bot mode. Wave 1 seems to be just Leo, Mikey, and Shredder. 1/9/16: Target in Amarillo TX. $5.99, but so underwhelming I didn't buy any.

    CONSTRUCTOBOT 12-IN-ONE: A "Brix" not-Lego set that can make up to 12 construction vehicles (only six at a time, two official models for each of the six sets of bricks) or build a giant mech suit that looks like a construction vehicle combiner. 11/20/15: $50 at TRU in Amarillo TX. Note: this is one of their Black Friday deals, $25 on Black Friday for everyone, and $25 for rewards card holders 11/22 through 11/26.     TMNT MUTATIONS: Voyager-sized turtles that turn into tiny roleplay-sized weapons. Leonardo into two "swords", Raphael into two tiny sais, Michaelangelo into tiny nunchucks. No Donatello in the assortment. 8/18/15: Part of the Walmart resets all over. 2/21/16: New wave at $15 price point that's sort of Hyperchangers (one main action, but may need a second and third step to fiddle with panels). Mike to dragster, Raph to armored trike, Leo to Spyder-style reverse trike. About as much articulation as the average Hyperchanger. Spotted at Walmart in Amarillo TX.

    HATCH'N HEROES: A Disney line of eggs that transform into various characters. 4/3/15: Baymax at TRU in Amarillo TX, $6.99. 4/22/16: Oops, forgot to keep this updated. A bunch have made it to Walmart and TRU in Amarillo TX, including Toy Story and Good Dinosaur figures. Knockoffs of the Good Dinosaur ones are sold at Dollar General under the Dinosaur Mutants name.

    POWER RANGERS: Morph-N-Pop Dino Charger T.Rex turns from a cylinder (a power cell) into a chibi T.rex zord. 1/30/16: TRU in Amarillo TX, $15. 12/18: The new Ninja Steel toy line has mini-vehicles that transform into throwing stars (sort of), and include knockoff-level pilot figures, all for $20. Pass.

    OTHER KNOCKOFFS: 9/18/16: Family Dollar's holiday toy expansion includes a $15 combiner set (jet, car, anti-aircraft tank) from the pre-articulation era. I got a version of the set a decade ago, it's decent for a brick. (It's a KO of the GodMax team from Exkaiser.) 10/30: Oops, forgot to mention here that Tuesday Morning has its usual holiday assortment out now, including a few new $6 KOs like Black Ox and a no-individual-robot-modes Landcross team. Also $2 KO RobotMasters Star Saber (doesn't have enough joints to actually transform) and Victory Leo (transforms, and even sort of combines, although the wings point the wrong way). 12/2: Burlington Coat Factory (yes, it has a toy section) has a really ballsy Optimus Prime (Cyber-Stomper from 2009, I think) KO for $8. Instructions on the box are for Revenge of the Fallen Legion class Bumblebee and Sideswipe, box art is of Optimus and Bumblebee from that movie, plus what appears to be a Starscream vehicle mode.