From listening to the audio clip, my understanding was he was trying to point out the absurdity in Reddit's claim the app actually cost them $20,000,000 per year by facetiously pointing out, if it were true, they could have gotten the app permanently for a steal of half that yearly cost and both of them would have been significantly richer. It didn't seem like he was ever legitimately asking for $10,000,000 to shut down the app, he knew it didn't cost that much and wasn't worth that much. If he thought it was actually worth so much, he wouldn't be shutting it down now.