Or.....do any mountain shops in the New England area offer shop demos to try that anyone knows of ?
Don't know where you ski, but they have had a consumer demo day at Hunter Mountain for as long as I can remember, usually the first or second weekend in December, and I have seen them advertised by a number of the New England Mountains as well. Though the demos are free, you're competing with a hundred other people for availability, and whether or not you actually have a chance to try the model(s)/size(s) that interest you is somewhat of a crapshoot. For that reason, the reps get a little peeved if you keep the skis for more than 2 or 3 runs.
Regardless of where you ski, just about every shop near the mountain offers demos. What you pay will vary, but you can usually apply the cost towards your purchase if you buy there.