Don't go for eBay, but simply have them developed in a photo lab. I've been collecting IP for 20 years and only use 8x10" and 8x12" photos that I have developed on Kodak Royal paper in a photo lab for € 0.49 each.
That's way cheaper than buying your photos from photo dealers off eBay, at least if you are needing a large amount of photos each month like I do for my IP's.
However, I've heard from some of my US collegues that some photo labs in your country have very strong rules regarding copyrights which we don't have to deal with here.
Last edited by Estephano; 11-13-2012 at 08:14 PM.