Service to Send Prints to Customers

[dvduval]

I'm working on the phpLD Photo script, and basically it allows people to setup a photo gallery and sell their photos (or just display them). I've seen on other sites where they will offer prints of different sizes.

Are there services out there that will get the print created and sent easily?
My idea is that I could partner with a service like this and offer this to buyers of my script. Any ideas?