In the New England area is a dealer called Daddy's Junky Music. They take lots of trades, and offer a buy-back trade up policy on new gear traded back in the first year. They make no bones about it ... a trade in (not trade up) will get the owner ~60% of what the store will ticket the item. Not a bad thing to know, since I know I can offer them a lot less than ticketed on a used item I want to buy ...