The Patriots have the exact same system
For season ticket holders the only benefit to sell them this way is you are not responsible if someone gets in a fight ect ... in your seats. If you sell them privately on ebay and they find out they will pull your seasons or if you sell them to someone on your own and they get in trouble (while sitting in them)you are respnsible and they will pull your seasons. I look occasionally if someone is looking for an extra ticket. The only time I see tickets listed is a day or 2 ahead of time if the weather forcast is for heavy rains ect... In fact they had originally forcast the game with the Broncos to be for heavy downpours and I saw that tickets for that game were available. But if for instance I picked a pair for AK and he wears his pimp suit and he gets in a scuffle with a Pats fan I am responsible since I bought them for him.