Yes. They will take a lesser fraction of the value in cash when there is a positive value in getting rid of it. Small items are easy to get rid of anyway (you could just throw it in the trash), and if they have value they may be willing to store them and wait.

My overall reaction to the article, though, was that he's doing a fair amount of work for a pretty so-so return, and it looks hard to scale it upwards. (That $1,000 for the week doesn't come with any fringe benefits, like insurance.)