for the cards…

sandisk extreme ($139 at bby) is a good choice. the switch-licensed card is the same price, and i think it’s the same card inside. the switch one also has a discount for bbyplus members (look on bby site for that).

the samsung pro plus costs a bit less and works well, too ($89 at bby).

for where to get them, safely…

buy in-store from a major retailer to avoid the potential problems with amazon’s co-mingled inventory.