Not too sure if we're comparing apples to apples, here. You are selling a game for $5 that isn't even out. No screenshots, no game-play videos, just a vague description of what it might be, sometime in the future. The music is nice, but I would be impressed if you made money off something that doesn't appear to be anything, yet.
On the other hand, I'm giving away, for free, today, games that can be downloaded and played right now. The two games are well documented and cost the end user nothing.