DEN-LAX yesterday. DL 2661. Sought 2 passengers to go 2.5 hours later. $200 = no takers, $400 = no takers. $500 = takers. Not sure if they ended up needing them or not.
My flight DEN-SEA sought 2 passengers. 1st offer was $500 and had takers. Ended up not needing them as we had 2 no-shows.