Steven Stills, "Stills Alone"

While at my fathers dealer buying a new cart and checking out amps I saw this in his pile and asked if "Tree Top Flyer" was on this album, it was and he gave me a copy noting it is pretty hard to come by and just curious if this is the case? I dont doubt it may be somewhat rare given I never have seen this album before but it had radio play back in the late 80's early 90's I think. Is this indeed that rare? Thanks guys...and John!