For $7.47 shipped I don't mind picking up a full deck and having copies to hand out to other local players. In my mind it's a fairly minimal cost to help promote the game and of course I don't mind a nice quality reference card for myself either.
If I was doing demos at a con or whatever then yeah, printing my own would be preferred due to lower cost and going through tons of cards. But one deck should last me pretty much forever for our local group.
Agreed, although I'd prefer to have my local store's name on the card rather than an advertisement for an upcoming fan set . Of course, thats what happens when you don't make them yourself.