TTAC3 memberships are there for the sole purpose of saving hardcore players' money. I only get to play there once a month if I am lucky because of distance and schedules, but if I lived around the corner I would be there all the time. The membership was made for people who want to play 3 times a week. If it costs $20 per game to play, that is 60 per week. If a one month "Membership" costs 60 bucks per month, that equals three weeks free.
I can assure you that Brian is not a money making machine. He will probably not like me saying this, but the last time I was there, he did not even charge me or my friend. AND he gave my buddy a free beer. Believe it or not, but my impression of Brian is that he is doing this because he loves airsoft and the comeraderie.