A friend from work stumbled across this amp/cabinet a while ago. He bought a Framus bass for $75 and the guy threw in the amp/cab for free. It's not pretty, with a warped grille, some small tears, lots of grey in the brittle tolex, etc. But it plays quite well, with no apparent mechanical/electrical issues whatsoever. From what I have read, it's Japanese made, and is about 50 watts on a good day despite the 100 watt claim. It has 2 6L6 tubes, and three preamp tubes. (12ax7s?)The cabinet is 2x12, and has some original custom drivers with shiny dust caps. He dropped it off at my house a few days ago and said "Make me an offer." I want to be fair. It's fun. It sounds great, albeit not very powerful. I don't really need it, although the idea of tinkering with a tube sound is very appealing to me. What should I offer him? Any thoughts?