[gold stinger]

there are repeatable achievements for unpacking unique sets of cards in normal packs, which you can't get from a special pack (such as a token pack). Certain cards that you are able to collect can also qualify for non-repeatable achievements as well. It also works in a sense for comparison of who has the most cards, most rarest, most valuable, etc.

on top of that, if you feel that you don't have a real need for achievements or hard collecting in that sense, you could always sell your cards to other TCG players for raw credits, and there is a thread for that located here:

http://www.flashflashrevolution.com/...d.php?t=141122