Wildside Press is something of an odd company, partly parasitic in that they take public domain stuff (often scanned and corrected by others) and sell them for cheap (in Megapacks), but they also do have stuff that doesn't seem to be PD and sell them for cheap (also in Megapacks).
Case in point, the Kothar the Swordsmen novels from Gardner Fox. He was a favorite of EGG (even publishing him in early issues of Dragon), but his work is very hard to find
Anyway, my point is, they are having a 99 cents off coupon (and their megapacks are 99 cents) with the code HAPPY4TH
Two different collections of Kothar novels are in the fantasy section, there's also a lot of old pulp horror in that section, and you might also look at the Lon Williams weird western megapack, the dude more or less invested the Weird West genre. I came across them via Pulpgen and Mobileread (a guy there would convert Pulpgen's PDFs to mobi/epub) and they are very good.