Got Print. I sent them a "commercial quality .PDF" file, and the bookmarks I received in the mail blew me away! The example here is a .JPG I used for the blog, and isn't as crisp as the actual bookmarks, but you get the idea. Just go to their website and follow the instructions.
I used MS Publisher to make mine--mainly because I don't have Photoshop. Anyway, I got 1000 bookmarks for $34 plus shipping. It definitely suits my "starving authror's" budget.