Poor form.
You are in a poor position but why you expect a random company to foot the bill is beyond me.
It had like 1 maybe 2 pages of actual point and 5 pages of old pixel art.
If this game has levels/enemies more interesting than what was in this demo it could end up being fun. If not...
The "Use Tax" if ludicrous as it's completely unenforceable. It's supposed to apply to purchases on Indian Reservations as well.