pokemon black bolt japanese booster box Pokémon SV11B Unleash the electric intensity of the Scarlet Pokemon Card Game Black Bolt

Different platforms take a different cut of the profits (10% from TCGPlayer, 10-15% from eBay) and you'll find cards are more or less likely to sell on different marketplaces

Granted, Option cards are immune to the Jamming effect (Meaning only Misty Sevens and Cherrymon's Mist can negate them) but you see that so rarely, you don't really need to worry about that

You won't be able to put a Hero onto the battlefield under your control during that end step in time to have the ability trigger

But thats not all its good for

Even if GameStop does miraculously figure out how to authenticate the cards it buys and react to a market that fluctuates minute by minute, the biggest challenge is going to be convincing anyone with half a brain to sell their cards to GameStop in the first place