That's too bad. But yeah, at least you didn't pay full price. Do they have a way of letting you listen to the music first?
Mostly I've found that music intended for RPGM games is pretty bad. Then there's stock music, and that's usually either too short or just doesn't really fit. Or if it's good stuff, like Immediate Music, it's too expensive and it's out of place with the rest of the weak filler music. Unity Asset Store has some pretty good music though and it works well for video games. I've picked up a few music packages there.