They'll download the app, use it do whatever they want, and refund it That is tempered by the fact that Google only allows the refund once - next time they nee

They'll download the app, use it do whatever they want, and refund it That is tempered by the fact that Google only allows the refund once - next time they need to do the same task they have to make a permanent purchase, and the app they used last time is in poll position to be the app they use (assuming it's any good).