The thing about buying electronics used you don't know their
service life or how they were used. To replace it its more like
$80.00 with shipping and other stuff . So say you buy it for 125 the rough going rate for used one. Then it frys out a week later you pay another
80 you already payed more than a new one. But say it last for quite a
while then you sir have gotten yourself a deal. If you know the person personally or from the track you can see generally how they take care
of there equipement.
Dynodan