Well, last I checked it was available for $5.99.
Although, I'll be honest Takeshi, you might be better either waiting for the Deluxe version or downloading the Abe-A-GoGo soundtrack, because those have both cutscene and game music in them (albeit with tracks missing from the latter).
Ah, Slog Chase...
It will be interesting to see how complete the "deluxe" version is in comparison to the Abe-A-GoGo soundtrack. Guess we'll just have to wait and see, and from there I'll know if I need to remake my full mixes or not.