You can now pick up a copy of the Reverend OST on Steam!
Standalone: https://store.steampowered.com/app/3525570/REVEREND_Soundtrack/
Bundled with the Game: https://store.steampowered.com/bundle/50392/Reverend__Soundtrack/
Bundled with ALL DOSMan Releases: https://store.steampowered.com/bundle/46652/The_DOSMan_Collection/