100% probation worthy. While not HOS worthy, what he did was break rules and screw you over. That’s why we have the list.
As for getting off the list, he could follow through and sell you the book, obtain another copy and sell it to you at that price for a loss, or offer to do something else to get off the list. @catrick339 allowed a guy to get off the list for something similar by apologizing and donating in one of the charity threads. He could work with you to do SOMETHING. Overall though I value protecting future collectors over this d bag’s ability to get off a list he deserves to be on.
oh and @Buzzetta