A friend of mine picked up a used 1992-vintage Blessing B88 trombone -- a lower-cost copy of the Conn 88H -- with a yellow brass bell and a new Pro-Tec Max case. When he asked me to evaluate it, he said that his plan was to list it for $900 on eBay, or I could have it for $700. I had to replace the plastic stop plate on the rotary valve because it was cracked, which took an hour of my time and a part that he provided, and I gave the slide a thorough cleaning with brass polish to get the oxidation off the inner slides. Once it was sorted, I played it on a rehearsal and a concert last week. On the positive side, it's a very good player. On the negative side, the slide needed frequent re-lubing, which I didn't expect. I inspected it and found a number of red rot spots in the outer tubes. A slide with this problem can be made to work, but will require a lot of pampering to keep it running well. The only long-term solution is to replace the outer slide tubes ($$$). I researched completed sales on eBay, concluded that the horn was worth about $400 in its present condition, and offered to buy it for that price. He declined my offer in a terse all-caps e-mail, so the horn is going back to him tonight. If it doesn't sell and he offers it to me a second time, my offer price the second time around will be $350. I don't need this kind of aggravation and I certainly don't need to overpay for a horn that I would enjoy playing, but don't absolutely need to own.