Printroom
I send my stuff here. You can make online albums, where people can have the photos sent directly to them, set your own price and sizes, etc... Cheap and quick too.
I have this setup with a local agency whenever I shoot a portfolio. I place the pics in an album, set the prices, tell the model the url and she can pick whatever pics she wants and have them sent directly to her.
All you have to do is upload a JPEG that is blemish frre and requires no retouching. Plus the pixel size has to be appropriate for the size of print.
Hope this helps.
Art.
PS Roland, I don't know if this violates any rules, but I thought it might help other photogs, MUAs and models out there.