UA 383, Jan 17, 2024 departure, HNL-DEN
One remaining seat in FC, asking $804. At the time I checked, the plane was only 2/3 full, no standbys indicated with numerous empty rows in the back so I passed on the offer, figuring I'd get hobo FC.
The offer remained right up to boarding so one person got an upgrade. Joke was on me, plane was nearly full and women sitting in the middle seat next to me was overflowing her seat. I still managed to get a good 4 hours of sleep.