I think we're all just saying pretty much the same thing. I think 90k is too low though, unless I'm wrong about most of his items being complete, cause even complete polished turds are worth SLIGHTLY more than incomplete turds (Hey, this one has no corn in it!) I doubt the average value of his games are $8.18, and that's what 90k would be.
And considering what website he owns, there's got to be a bunch of the "new" releases\homebrews. And the market value for them are way higher than they should be.