I got a flyer in the mail offering $50k-$70 less for my Arizona winter house than others are selling for. I also get cold-called by realtors wanting to know if I want to sell. No corporation has offered me 20-50% above the FMV. Maybe that will start should I ever put it on the market. Its value has doubled in the seven years since we bought it. I could handle an extra 20-50% above that!
My sister bought a home in NH on a lake a year ago - sold it to an Alaskan orthopedic surgeon with no inspection & no walk-through for $800k more than she paid. There was a bidding war.