Here's one of the newest additions to my collection, a Haunted Thrills 2 in about 5.0 condition. I'm building a collection of Ajax-Farrell Haunted Thrills (versus the other Ajax titles) in 5.0 - 6.0 because I love many of the covers in the run, particularly #5, 6, 7, 8 and 10. I will probably end up collecting all the Ajax pre-code horror books, but will probably do Voodoo, Fantastic Fears and Strange Fantasy in about 4.0 instead of 5.0 - 6.0. The Fantastic Fears #5 in 6.0 would be more than I'd want to spend, and a Voodoo Annual in anything higher than VG- (same grade as the copy I have) would be tough as hell.
I'm already having trouble finding a few Haunted Thrills issues in higher than 4.0. We'll see how this plays out. If I'm patient, I think I'll be able to do a nice set.