Hi - Please don't take offense to this, but can I suggest lowering the price to perhaps something more along the lines of $14.99-19.99 on Steam? You only have 7 reviews when you should have a lot more than that as people like the game and I would guarantee it's the price. Streets of Rage 4 is 10 beans cheaper than this and that is a AAA sequel that's been in the wait for years.
I understand you and whoever created the soundtrack put a lot of time and effort into this which you're probably factoring into the price, and I can relate to this as I have a game on Steam I wrote the soundtrack for that took up a few years of all my spare time and felt that our price of $14.99 was too low for the amount of labor but when you first start out you have to sacrifice and be realistic.
Just a suggestion but the price is what's stopping me from purchasing.