alot of the the collectibles you can get from video game creators or merchandise is wild... because a lot o game producers make over 100 products of game things which acan be serialed or it can also be imported images which you can do at any custom shirt designer shop in the u.s :)
most collectibles you can get or buy are from mass majority video game developers like nintendo or epic that sell most off product merchandise or toys that you can also find in game stop or game pubs. You can also get epic game toys or collectibles like bbbleheads or POPS that come with a code or a qr code that you can sign to get in the game for more skins or product majority.
There are serial collectibles aswell which means that there out of a specific nuber whch can be big or large. The closer number that you get to 1 is the more rare and expensive that it is. For example if i had a POP/bobblehead and it had a serial for 1 in 100 that is the rarest Pop/bobblehead of that type of model that you can get and same for more...