Wow
Thanks guys. $500/ month to park on the grass - that is a scandal. By way of comparison, at the equivalent field in New York (KHPN), it is $250/ month to park on the apron, and they will tow the a/c out for you, pre heat the engine etc, plus they have a lounge, briefing computers etc (plus the field has two ILSs and two WAAS approaches).
Somersby or Warnervale won't work - too far and no instrument approach. I guess I will have to swallow the charges at BK but will reach out to C&H - tks for the tip.