It's definitely a PT Barnum situation. Anyone who trusts list prices and percentage discounts deserves what they get.
The liquidators are just trying to make money. You can't really begrudge them trying to get the most that people will pay for inventory they've paid real money for. There will be deals at the end when they get to the crap that most people don't want. Of course, you then have to find something you want that hasn't sold yet.
When compusa went under I got a magsafe airplane adapter for half off, which was a nice deal as apple doesn't discount for the most part. I'll stop buy circuit city in a few weeks and see what's there.