If I see an ad and I feel the asking price is out of line, I disregard it.
I have "low balled" auctions on ebay, "not tested" "not working" "sold for parts". Even if they do not state "open to offers", I send them a message. I state the possible problems it may have and cost to repair. Hopefully justifying my low offered gamble. I low balled one Mark Levinson power amp. It was the Seller father’s amplifier, and he knew nothing about it. A gamble purchase for me. I suggested for he to take the unit to a reputable "highend" stereo shop to have it checked out. Limo connections. He might get more money and faster sale if the position or disposition is known. "Who knows. They may give you an offer for it right then and there for it."