.. my case is different.
I run a site with friends' photos, and a lot of them have requested prints.
I'm currently using the "add To my favouries" link to make them chose the photos, then I dig in the DB look for the files (pray to god it's not more then 30) then simply.... take the photos on a disk.
go to my corner photoshop(2) (BLACK'S or LOBLAWS) and print them
then meet with my customer(/friend) and pass them over do the exchange.
hope this is useful for those of you that ... 'see' the person you deal with.
hehe. just got my first 2 customers
..
Note: all photos have the same price..
this aproach is BORING.. but, hey! worthed trying
thank you