I was in a Goodwill a little over a week ago that had a box of probably 30-40 loose Atari 2600 games. They were mostly commons and duplicates but there were a few good one that I could put in my collection or resell. I took the box up to the front of the store and asked if they would sell the whole box for a $25. They said that they weren't allowed to do that, and that several people had come in wanting to do that, but they had to tell them the same. So I asked what they were supposed to sell them for, and I was told $4 each. They acted kind of aggrivated because of the fact that the games had sat for so long, but couldn't take any offers on them. I cherry-picked the few I needed that were in the box and paid the asking price.
The whole ordeal makes me wonder where they get their prices or who is marking the decisions as to what price something is marked.
Edit: The post above this says that he found an Atari 2600 system for $2.99 at a Goodwill, yet I was asked to pay $4 each for Atari 2600 games... This just reinforces my point.