Shhh....don't tell everyone about the great magazine covers, it's suppsed to be a secret.
Guide on most of the early Creepy's and Eerie's is still low, $60 for #3 thru #17 Creepy's when most of those covers are Frazetta's is nuts. The most expensive one in that run is #9 at $100 for 9.2. Good luck finding a cgc 9.2 #9 for $100, if you find it, let me know, but even those are still cheap. A silver age comic of similar print date/series # sells sometimes for many thousands, and quite honestly do not compare in art quality.
Nothing against Ditko (I am an ASM fan too), but if you set an early Creepy next to an early Spiderman, without knowing the value, which would you think is worth more? Looking strictly from an artistic standpoint you would think the Creepy, but alas we know that is not true, and they were printed about the same time period.
Warren made magazines because they did not want to be censored by the comic code, if they had been conformist and settled for making comic size the prices would be different now, but would the stories and cover art been the same? Probably not. So as far as the prices adjusting back to reality (Guide) let's hope not, because that reality is flawed.
Okay, done with my