It appears that if some of the cards don't sell high enough for him he cancels the auction and relists the card.
Here are a couple of examples
This is the third time he listed this Delehanty
https://www.ebay.com/itm/23421389847...sAAOSwJKVhUT6v
https://www.ebay.com/sch/masonje2/m....p2046732.m1684
Also the third time he listed this ATZ
https://www.ebay.com/sch/masonje2/m....p2046732.m1684
https://www.ebay.com/sch/masonje2/m....p2046732.m1684
I'm surprised he only has one negative feedback for canceling auctions.