"Flying Squirrel" sounds like it is "more or less" a down-market version of Hagerty "Garage and Social" out in Burlington on Corporate Drive where "people with money to burn" can keep their "Collector Cars and Motorcycles", hang out, and dine and socialize.
If you keep your motorcycle there, prices start at $425/month per bike or up (which includes your "Social Membership"). (If it is your "Collector Car" the price, per car, starts at $650/month) A "Social Membership" alone is $350/month.
Other than access to a restaurant, lounge, golf simulator, cinema, and a retail shop, you get "event access" (whatever that may be).
$5,100 a year sounds, to me, like a lot of dough to garage an old motorcycle.
AFJ