Simple, having access to SIX different aircraft with various payload, nautical mile range, speed, avionics and only paying the monthly membership dues for access.
Not paying for tie-down ($180/month), annual insurance ($3k/year), annual inspections ($4k), maintenance, avionics upgrades, etc. Plus having access to the camaraderie of 64 pilots (plus 8 different trainers), monthly training programs at each meeting, 2 x year social dinners, sharing of flights (and costs) with the other 64 members, etc