If you like the game I'd suggest you buy it. I can't keep making games if I can't support myself by making games.
$15-20 usd? i'd be willing to get it, considering the game has the unique quality of making you feel like a dreadnought that had a rail-gun, rockets, auto-cannons, a warp drive, and some RCS thrusters the size of wrecking balls strapped to you while you slide around the room in 3 dimesions like some grim-reaper ballerina of death, I've only played 8 hours, and I already found out that you can dash-walljump your way over the lava pit in the Cerberus boss-level, this game is art, and it's specialty is annihilation.