Route: DEN-SFO
Fare Bucket: V
Price Offered: $109
PCU/UFC?: UFC
Where it was offered/accepted: OLCI
Accept it?: Yes.

The same price was offered to me when I bought the ticket but then it went to $420 until it was time to check in. It was the last first class seat available according to the "Flight Status" UFC list. A friend who is also Premier Gold checked in just before me and ended 14th in the waiting list, so I didn't have a chance to get a free UFC.