I agree with the above comments of Zd542. The worst transaction I have ever had on Audiogon was with Mr. Singer a couple of years ago. I had to spend over $1,000 to get a supposedly "new with factory warranty" amp repaired, as well as replacing the complete set of input, output and driver tubes on the amp that he claimed only had 50 hours of use on them. (all the tubes were either dead or bad, the amp had other problems, and the factory warranty was expired!) He offered me $100 to make the problems "go away", then he washed his hands of the deal.
Andrew Singer of Sound By Singer
I recently purchased a demo pair of Harbeth SHL5 speakers on Audiogon from Sound By Singer. They were double boxed in the original factory cartons plus an additional outer box for protection. This was done as an extra precaution by Singer and greatly appreciated. After receiving them, I discovered a small tear in the fabric of one of the grilles. Mr. Andrew Singer handled the issue personally and shipped me a new grille along with the tool for removing the grill - NO QUESTIONS ASKED. This kind of personal attention and customer service is as good as it gets.