I bought one of these about a week ago. It showed up last night and the final product was disappointing, to say the least. The image wasn't cropped as I had specified, or at least, if it was, not to what I had anticipated. The result is a blurry, smudgy look that doesn't live up to what I would have liked to have on a mug. So I'm disabling the print and I'll try again some other time.
This here is something I made for a mug. I thought I would share it with you guys and offer up the opportunity for you to buy your own if that's something you think you'd like to do. I believe deviantART offers white and black mugs... I personally think this will look amazing on black.
Anyway, I spent a couple weeks working on this one, so I hope you enjoy it, haha!