I haven't been following Ouya since the initial hype, but wasn't one of their initial talking points that they would only allow free games?

I guess they're doing paid games now: "But that’s not the end of it: We’re promising to deliver Final Fantasy III like you’ve never seen it before – Hironobu Sakaguchi’s third installment in the role playing game franchise will be updated to exploit OUYA’s high-definition resolution in glorious graphic detail. For those of you who are new to Final Fantasy, we’ll offer a free demo so you can give it a go!"