P22 type foundry did a cool deck of cards a while ago and sold them. They were, essentially, promos, but because they were just so fabulous, people bought them up and they sold out very quickly.
Now they are doing it again and I was lucky enough to get one of the decks (click for much larger version):
This is just beautiful. Each card is a work of art. And yes, I paid for it.
This is the kind of thinking I want to encourage all of you to engage in. When you have a great idea, figure out some way to make it happen–like selling the promotional piece or how about making a contest where the winners get the high-end piece (reducing the number required to be produced and making it a limited edition!).