I happened to go there today and they gave me codes for Arceus, aka the god of Pokemon. I was surprised; I haven’t been keeping tabs on that sort of thing. Been mostly playing Pokemon Shuffle and trying to avoid heat exhaustion. 
The clerk said that if they run out of actual cards, they have a code they can give out that’ll get you the Pokemon as well. Apparently either Gamestop or Nintendo wasn’t happy about the online card scalpers.
A bit off-topic - This particular Gamestop had general fandom stuff too! Funko figures, t-shirts, plushies, etc. Also blind box figures for everything from the Bethesda games to Stephen Universe.
I picked up a stuffed narwhal, because, narwhals. 