Yours, I assume? I personally wouldn't bid on a book if hoarding has affected the value in recent years—that's a bubble that could pop at any time, in my opinion—but I'm sure it will sell for more than guide.
I'm certain that Catman 15s are being hoarded, too. I don't know who's doing the hoarding, but it's been going on for quite a while. The reason why I say that is because in the past 20 years, I've never seen the same copy offered for sale a second time. That's pretty unusual, even for rare books. I've also seen enough raw copies to know that even though it isn't a common issue, it isn't nearly as scarce as the census would suggest. So either multiple copies are being hoarded by the same person, or every single copy that has sold in a public auction has been locked away in a different private collection with little to no turnover. My money is on the former scenario. Others are free to disagree.