Wolfire Games Forums

I'm a future Overgrowth-Buyer I'm wondering, Can i pay with a 50$ prepaid vanilla mastercard? Also, is it exactly 29.95 USD, (29.76 CAD) or is there tax with it? 3rd, If i ever accidently delete the game and such, can I redownload it from the site? Finally, is there a key-registration involved, or h...