Limited shares, high demand.
Price is bound to go up. Supply and demand.
I have been shooting there with my father for several years now, since back when shares were $600.. then $1000, then $1600, etc.
I got one a few months ago for under 3k, but I was lucky at that price. Since lots of people want shares, and few are willing to sell, the few sellers charge what they want and will get it.
Expect prices to keep on rising on the used market.
All that said, it is worth it. The club is full of active shooters and lots of great guys in general. Very friendly nature there, even if big brother is slowly moving in via. cameras.