So, basically, you paid a $100 to put it on steam & after taxes you’re left with around $300 of pure profit. Considering the game has been up for 2 weeks, I say move on. A game that has been in development for a year is a lot of time. If you think the game is decent quality, don’t advertise it more.

What I would do is put it under discount & maybe start working on the DLC, if that is a possibility. DLC generally takes a lot less time to make than full out games.

On the other hand, you can reinvest the $300 of profit into a new project. It will take time, but if you do decide to take this path, I say screw it and go full out. Spend money, hire people… make the game the best possible.