The 2-disc set is yours for only ten bucks, or you can buy each track individually for 99c apiece.  There are substantial samples for pretty much every track, so listen up.

If the samples aren’t enough to sell you, please consult Fukasawa-san’s face.  Can’t you see that he is serious?!   Check here for a great interview with the composer (plus the SFIV sound director, Endou-san).