This is usually one of the first questions I ask any store; What their in home demo policy is. The ones I continue to do business with are the ones that have a decent lending policy. It typically means you pay the whole price for an open box unit to demo at home for a week or so, with no questions asked when the unit is returned, as long as the unit is still in the same working order, and a full refund is given. Stores that won't lend with a policy something similar to this aren't worth my time or money.
I agree with everyone else on this one. I was looking at purchasing new speakers a few months back and I was allowed to demo some Energy Cr3's, C1's and C7's. After a week I returned the speakers and went with a different company a week later (Def. Tech's). These were nice speakers BUT I dont think I would be as happy as I am right now.
ALSO some of these stores have SO MUCH MONEY invested in their demo rooms that it makes perfect sense to take them home.