Good advice Terry. A lot of the used horns that you'll find are going to need some repair, so I wouldn't get too discouraged about having to spend a few bucks to replace pads, or maybe a broken spring and a couple corks. The horn is probably worth the cost of the overhaul, as long as there is no damage; broken keys, major dents, missing key guards. It would be a good idea to have a tech look at the horn, so you have some idea what it's going to cost to have the horn repaired. If you are buying from ebay, make sure you ask lots of questions if not stated in the ad; like "Is the action free?" "Are there any dings or dents, broken/missing keys, missing keyguards, or broken springs?" "What is the condition of the pads?" Good Luck