I don't get this part, the "less likely to attend". I would bet most season ticket holders would attend nearly every game they are able to. Perhaps some of the bigger games, including the derby, STH's are more likely to shift schedules and avoid conflicts to attend then maybe a home game against San Jose, but generally I think it's attend when you can (or maybe I'm speaking for myself).
This year, I've had a crazy schedule and have been unable to attend the first derby, the Vancouver saturday night game, the home game against Atlanta, and the home game against TFC. I'm also going to miss the home game when Rooney comes to town, and the regular season ender. I would bet that those are all or close to all "premium" games that would result in higher single game prices, allowing me to be more likely to sell mine and possibly at a higher price.
This goes both ways.