I recently bought a used road bike (really cheap, but great condition) that needed a tune-up. After a few rides, I knew what needed to be fixed. So I brought it in to the shop. One of the repairmen jumped right on it and said, "I can get this working" (instead of charging me to replace it). What a great experience. Of course I got some extra things I wasn't planning, but that's okay.
When I picked up my bike, it looks brand new! The shifters are quiet; the gears look brand new; I couldn't be more pleased with all their help! Thanks again!