I've thought about this quite a bit... Jim has the ability to see the meta data HA collects every day on every auction... he can see who every bidder is, how many times that bidder views the auction, how many non-bidders are viewing or tracking the auction, etc. All of this is a gigantic advantage over the rest of us, because it is real, actionable data which allows one to predict bidding behavior and pricing.
Jim seems like a nice guy, but his involvement in his own auctions just feels corrupt to me.