I sent in a Canon 17-85 IS lens and it cost about $100 to repair. When I got it back it was like a brand new lens. Since they go for about $250 on ebay I thought it was a pretty good deal. I believe they should tell you how much it costs once they are able to asses the problem. If you don't want to pay then you either a) pay for the shipping to get it back, or b) let them keep it and write it off.