I would have it in a heartbeat - but it depends on what condition it is in?
That amp is easily worth $250 if it's working. Only problem is the attenuators can be a bit troublesome.
I must admit I am not familiar with this particular model. I repaired a B-3000 (not to be confused with the BA-3000) which had a plastic front panel and was very poorly made inside. In general, with Sansui, if it has a metal front panel, it's good. Most of the ones where they cut back on the quality have plastic front panels, with the exception of the "R" series receivers, which had metal front panels but the bottom panel was pegboard! There is always an exterior clue as to the interior quality.
That is a BEAST. BUY IT! Seriously!
It's a 200+ watt per ch version of the amp topology that is in the AU-D11ii.
Will ALWAYS sell for more than you paid. But I'll bet a buck you won't ever sell it.
That's the last of the GOOD Sansui power amps that were sold in any quantity.
edit: more pron pics...
editedit: I know you are a hard sell, so I'll continue to prod and push you. Let's put it this way, I'd take that B-2102 over a Yamamahaha M50, M70, or M4 anyday. The matching preamp is not the prettiest but is a GREAT performer. If you get both, you are done.
replacement knobs will not be hard to find. Not matching ones, but similar. They are a common size.