I don't remember what my local lab charges, but it's around $5/roll. I got sick of getting negatives with artifacts, so I figured I could do no worse and bought a Unicolor C-41 kit. I've done about 30-40 rolls now and only had problems with a handful (my first roll or two didn't get enough blix time, I think). At $19+shipping and my time (which I don't count because I enjoy the process), I figure I'm easily under $2/roll for C-41.