If you don’t want to buy the games twice (and I understand that sentiment completely) then you can still support Choice of Games by following their curation page on Steam if you’ve an account there. Also tell your friends to follow the page. I’m not sure how it works but the more people they have following their page the better.
@IrishSniper136 I’d suggest asking them. It seems odd. Those cards are everywhere where I am. Even the supermarkets sell them right next to the checkouts. It seems odd that a game store wouldn’t stock them. Maybe they’re in the back or something?