I have a story that involves a score and a regret of an almost all OO collection...a buddy and I split the cost of a $5000 collection years ago...it came out to about $5 a book...the collection included almost complete silver runs of TTA, TOS, Avengers, IH, and others...a complete Silver Surfer run that averaged 9.2...can’t remember the DC comics as my buddy picked all those...there were also 2 copies of Mad #1 in VG+...The regrets?...he had an ASM run 1-200 ranging from VG-NM which included an AF 15 in the VG range that wasn’t part of the deal...he wanted another $2000 for it and we couldn’t pull it off...the other regret is selling a lot of these on eBay just a couple of years later...can’t complain as I made a profit but was immediate sellers remorse...The worst that I remember was an Avengers 1-4 lot that I got around $1400 for and the grades were in the FN/FN+ maybe even higher...the sad part is I sold the better copies of everything...