This is what most people say today but my recollection of the time was a little different. When the Photo Journals came out, there were already a group of elite collectors that had been identifying the unusual and special golden age and precode horror books for over a decade. Some of those people are on these boards, like Jon Berk and Pat Calhoun (among others). Those guys were actively researching and writing about these "off the beaten track" gems in CBG and other fanzines and eventually the Comic Book Marketplace. Those guys were after books like Suspense 3, Terrific 5, Fantastic 3, Hit 25, Black Cat 50, Crime Does Not Pay 24, Eerie 2, and many, many others long before the rest of the market had any idea. Most collectors in the 1980s that ever ventured earlier than silver age hero books were busy chasing DC, Timely, EC, and maybe Fawcett. But that small minority forged through quarter boxes, dollar bins, back rooms and basements for the cool stuff nobody else wanted. And had been doing so for some time. To these guys, Suspense 3 was a big deal.
When Ernie Gerber published his books, it opened up this much, much wider world to the rest of us. I (and many other fellow collectors) would spend hours combing through those pages for new gems to find, making lists and then searching through mail order catalogs and the CBG to find these rarities. But by then it was already pretty late. Suspense 3 was on my first list and I searched and searched for a copy to no avail. Being from Wisconsin and Minnesota, there just wasn't the access. When I started looking, I think guide on it was a few hundred dollars. But you would never find one for that price (same as today, pretty much). The books that Ernie put on the dust jacket weren't arbitrary. It's a pretty awesome cross section of all comics from all publishers. Anyway, I've always had a lot of respect for those "trailblazers" like Pat and Jon (among others) that spent hours, days, weeks of their lives enduring boxes of comics in some old guy or lady's smelly basement or attic to clue the rest of us in.
And, of course, much gratitude to Ernie Gerber, too!