I am selling my Canon 50D body with accessories. After a boat trip on the Amalfi Coast, I got some Err50 and Err6 messages on the screen anytime a lens was attached. Without a lens attached, it acts completely normal, allowing you to click the shutter, view previous photos, etc.
I believe it could be fixed fairly easily but is not worth sending into Canon for what they will charge me and what I could spend to buy a used one.
I am asking $65 for the body, and $55 for the battery grip, w/ 4 batteries and charger. Free Shipping.

