https://help.coinbase.com/en/exchange/trading-and-funding/ex...
edit: these fees apply both ways, selling and buying crypto, so the user also pays less. and if the user buys $100 USD of tokens like they would at an arcade, all of those tokens can be spent on the game without exchange to fiat needed. this is different than every interaction with processor taking a cut which happens now if you want to buy 5 assets from a game that uses stripe or an app store or whatever.