The state of Conan ebooks is REALLY iffy. Anyone can rip the text from Project Gutenberg, run it through Calibri and add it to Amazon. (Well, not exactly--but you get the idea.)

Compounding the problem is that these things get pulled all the time, usually for formatting issues. I have two different versions of the same Conan collection in my Kindle library, neither of which is for sale anymore.

My advice is: Either stick with free resources like Project Gutenberg, or shell out for the superb three-volume Del Rey Conan collection. These are the primo, A#1, fully guaranteed versions. The price is steep, but it brings a certain peace of mind that you're getting the real thing edited by actual humans, and not some machine generated nightmare riddled with mistakes. If you like turning pages, used physical copies are considerably less.

They also come packed with cool artwork.

But yeah, either go big, or go free (so you have nothing to lose). Anything in between is probably a cash grab.