That’s basic economics, you offer two items with similar value and one is 1/3 of the price of the other. Clearly the cheaper one would sell more. I highly suggest you head to the nearest community college and find the time to take a basic economics class.
Oh really. Maybe you should look at other variables such as one population is significantly smaller so the market isn't as big or that the price point of a product doesn't equal the same everywhere. The US has had ppv's prices 4 x as much as a UK PPV and guess what it's still sold more at the higher price point. Now even for arguments sake we go with your argument. What was the numbers from BT sport for Wilder v Fury at £20? We don't know but it must of been way higher than the 300k that bought it America as like you say it was significantly cheaper and basic economics means it must of sold way more.