trading cards

dazz what r u doing u should blacklist me already

https://www.steamcardexchange.net/

I hardly ever bother, but the only two sites I've used are steamtradematcher which allows you to swap extra cards of the same set to compete a set, or steamcardexchange (as noted above) which allows you to swap cards from different sets using tokens. However steamcardexchange is often out of stock.

They both slow down massively in the sales.