Hey Brian,
I am also on the Island (Live in Nassau, Grew up in Suffolk). I have bought and sold several kettles and Performers on craigslist.
$200 is the fair price in this area for a Very good/excellent condition gas assist performer.
IMO you get more bang for your buck with a used performer vs a new MT.
The work table and gas assist are game changers for me.
If they are taken care of Webers will last for many years and in a year or two they will both be "used".