Hidden Gems

I've been rewatching some Tarantino movies lately and the Ennio Morricone pieces he's used has finally peaked my interests enough into wanting to own the music. The movie soundtrack in question is Death Rides A Horse (aka Da Uomo A Uomo) and I've been having a hell of a time trying to find a physical copy. I've only found it on a couple of places online but they want $40-$50. Any ideas as to where to look for such a not too sought after gem without paying five times the normal price?