I've made some changes to the payment system that should work, try again if you're still interested in buying the game!
Now it just goes to a 404 error page.
Try opening this page in an incognito window or another browser where you aren't signed into your dev account, and try to buy the game. You'll see what I mean.
Sorry about all that, it looks like it works now since someone succesfully bought the game. If that's you then thanks!
