[spike021]

I probably didn't market it enough but I specifically made an iOS game last year to be premium, $2.99, as a one time purchase to try and get around the obsession with subscription and freemium/ad-supported models but pretty much didn't get any more than a handful of sales.

At least for games I think it's much too late for the one time purchase model unless you're part of a pro studio making relatively big games.