This is funny to read.
Go to any high end auto auction. The announcer may try to start the bidding of at a particular price, but a seller will always come in with a stupidly low initial offer. Always happen. Then the bidding really starts.
That is the case for auctions, however, one should expect people would do the same for sales here.
I don't buy the argument that this is Audiogon and there should be a level of professionalism in bidding.
Lowball offers are going to continue to happen regardless. At high end car auctions, someone starts with a really insultingly low initial offer and everyone just stops and looks in amazement. then the bidding begins.
This is why I would never place an item at auction without a reserve price listed.
Don't get insulted. Just move on. As long as you don't have to sell the item for what the lowballer asked, then you are still okay.
enjoy