EBAY For Ham Radio Amplifiers.You may find some older Ham Radio Amplifiers that still do an awesome job. Then there are the new Ham Radio Amplifiers that someone may be selling. Usually you will find that most Ham Radio Operators keep their Ham Radio equipment in good shape. You have to realize that if there is an emergency no one wants their equipment to fail. My only advise is to check out the seller for their ratings. That way you can determine if it is a risk due to bad reviews. Yes unfortunately there are a lot of scams going around all over the internet. Also remember to check out all the Ham Radio Equipment At EBAY.