STH thrived selling tickets to a reactive market in the first few years due to high demand for the product. My experience selling P6 tickets has been this:
Years 1-2: almost any price within reason.
Sell time: 20-30 minutes.
Years 3-5: near or at face value.* Price categories were a huge factor in these years.
Sell time: A few hours, maybe a day or two for undesirable games.
*At the end of year 5, the Jets were out of the playoff race, and I sold a few games at STH cost, and one or two games below STH cost for the first time.
Years: 6-7: I started accepting well below face value on a regular basis and I often offered tickets at cost. Towards the end of year 7, demand rose and I was getting close to face value again. For the playoffs I sold every second game at face value. This was perhaps the Pinnacle for STH getting value for their commitment.
Sell time: a few days, less time if I offered tickets at cost. Playoff games sold in minutes.
Year 8:
I sold many games below STH cost. Ended up going to most of my games, and treated some family and friends to a game. In the playoffs, I undercute the Seat Exchange market for game 1 early. Sold tickets for just above cost while many listings were face value. Hours later Seat Exchange was flooded with tickets lower than what I got for mine. I attended game 5.
Sell time: days - unsold.
Year 9:
Incomplete. I'm attempting to sell games at 33% lower than STH cost. I've sold three games so far.
There won't be a year 10.