Don't bet on it. Those are the same liquidators who just did Linens 'n Things and I saw how they worked there. First raise tagged prices by 30%, then put up the "35% OFF!" banners. They are in there to squeeze out every last cent for the creditors and they don't fuck around.
On the other hand, consumer electronics pricing is very transparent now thanks to the Web, so it's pretty easy to do your homework.
EDIT: Today must be my day to be just slightly too late.