[Blarg]

Or he's buying higher-priced items. If you're buying things like a couch for $150 and selling it for $200, you can get away with buying a lot less things.

He might well have been understating how much he marks up key items, too, to make it sound more "fair" and less like he's making a killing or ripping people off. People do that kind of white lie all the time. It's easier than arguing with people why you're not some kind of a predator or something.