moo Business Cards

One of my teacher in uni showed me indirectly his business cards, and I noticed that it is not usual. I found out that his business cards is a double sided card, with one of the side containing his contact details and another one with pictureS.
Yes? Yes! Picturessss, he got different pictures printed on the back of his contact details. And in one set box of it, he probably got 4 or 5 different pictures.
I though that it must be really expensive for him to do that on his own. But i figured that its a "moo business cards".

Moo is a printing company who come up with this brilliant idea, where you get to print ur business card double sided with pictures on one side (personalized pictures; couple of those), and your contact details on the other side. You can use your own pictures by uploading it through the website or just use their broad selection of pictures taken from their designers.

They do international shipping (geez i hate when everything has to be from US), and dont you worry about the quality, from what i've seen, their quality is above standards and yes, the paper is thick, nice and promising. Those are things that your business cards should looks like.

Btw, they are not only doing business cards but also greeting cards and stuff. And if im not wrong, every order comes with a moo card holder for free? lets see, i might get some for myself, =)