Walt Flanagan...I've dealt with that guy before...
Couple of notes on that episode:
That DKR #1 is NOT a first print. It is a second or third. How can I possibly know that?
Because there's a hinge "crease" in the book. The first prints are solid, from the joint (where the spine meets the cover) out, with no hinge crease.
The seconds and thirds all had hinge creases, and so does the book in the video, unless I'm blind.
Also...$60 for a first print set, unless they're trashed, is a very cheap price these days.