While I've busy setting up my store on Zazzle, I unexpectedly made my first sale (yeay!) on CafePress.
I had only two designs there and had given up on using the site, because it is anything but user-friendly (at least for the sellers). But I might begin uploading there again, since I don't seem to be able to sell anything on Zazzle.
Here's is the design in question.
If you like it, you can buy it on Zazzle or CafePress.