OK, Sandman 1 and Omac 1 clearly had big speculative purchases. Forever People is a little before those, true, but everything I read is that there was some hoopla about Kirby launching these titles and those early collectors and hoarders socking away copies of them. Forever People 1 may very well not have had an enormous print-run, but maybe not so many returns? Of course, there weren't that many collectors then, but obviously there was hoaring of some DC #1s just a year or two later like the two Kirby books and Shazam 1. Throw in Jimmy Olsen being read by a younger crowd, maybe a huge number of those 333K got trashed and tossed? Obviously there is nothing hard to find about Jimmy Olsens of that era. I have like 5 copies of 135 purchased from dollar boxes.