Just got $120 for a 90s Specialized Hardrock Sport, a very basic, non suspension bike with entry level Shimano components. I had bought it at the neighborhood garage sale a few weeks earlier for $30. Underneath considerable dirt, it was in excellent shape with straight wheels. Unlike usually, the Altus canti brakes were working fine. Some grease, new cables, brake pads filed to fresh rubber, derailleur and brake adjusting and it was ready to go.
Buyer was a former triathlete who wanted something for his wife to ride on unpaved trails. He rode it around our neighborhood for a while, had me pull up the seatpost, generally gave it a thorough looking-over, liked it, paid without trying to negotiate me down. I figured that was about the right pricing. I've seen others trying to sell similar bikes here for up to $250 but those are the ads that appear again and again from people who can't take a hint.