I will warn that the enhance picture option they have brings out any inconsistencies in editing you may have done yourself. As a complete n00b in photoshop, I found this out via my skill (or lack there of) in using the dodge tool to get rid of the background. You can see shadows on the cards. I'm very glad I learned this lesson on a free sample.
They are pretty pricey for full sized business cards, so I'm glad I got this deal to check them out before dumping all that $ on something I wasn't sure about. I think I'll go for Moo's mini-cards next time, they're pretty cute and I could even use them as tags right on my products.