I'm not opposed to the concept of buying stuff from the store. Honestly, for a game that cost me <$20, I've gotten like 600+ hours from it. Really? What other game will do that for anyone? The best RPGs out there, including all of the sidequests, usually involve a maximum of 50 hours of gameplay, for the price of a full game. half the price, more than 10 times the play time.
That in mind, 'paying for it again' in the sense of buying things is actually something I don't mind in the least. However, I have yet to actually buy something, so my answer is 0.