I'm still searching for good amp. I have a small markbass on loan at the moment. You're not interested in that, right?
There seem to be a whole bunch of tube Sunns on eBay lately, but they are still bringing pretty strong money. Over the years it seems to me that it's cyclical; prices go up, the amps come out of the woodwork, supply exceeds demand, they start going cheaper, people stop listing them, and the cycle repeats in a few/several months. I think it's at the "out of the woodwork" phase about now; anybody in the market should keep their eyes open!
Or, maybe out of kindness biltmore will sell you his new Sorado for $100...