I do have some already, though most of my current cards aren't skiffy, and some I have ended up using when I write thank you cards to clients (mostly the pretty flowers, though). It's a 20% sale, so $3 would still be profit; not an amazing one or standard retail, but kind of a "make the table fee" thing -- they way some months Afishionado made rent on note cards and t-shirts, rather than art.

I did sell at least one card at winterfest last year, of the flower with inspirational quote variety.