Michael Jurewitz, in part one of his excellent series on App Store pricing, compared the prices of apps in the Top Paid (most downloads) vs. Top Grossing (most revenue) in the Mac App Store:
It would seem there really is a substantial difference between
this data. In fact, if we take a look at the percentages, apps on
the Top Grossing list are, on average, 294% more expensive than
apps on the Top Paid list. Meanwhile, the median price of an app
on the Top Grossing list (again, the middle of the dataset) is
329% more expensive than the Top Paid list.