Hey! You made ImpactJS? That's very cool, but it's really hard to commit $99 to buy an engine when I can't even try it! It looks super-rad and I'd love to give it a shot, but it's a bit high of a bar for a casual game dev.
Totally stealing that idea.
(At least from an end-user standpont. Obviously, you should do your own testing for conversion rate/etc.)