What they really should do is give some stats about how much money people typically spend on an app that uses IAP. E.G., "98% of users spend no money, 2% of use

What they really should do is give some stats about how much money people typically spend on an app that uses IAP. E.G., "98% of users spend no money, 2% of users spent an average of $3.50", or something along those lines.