It is an optimisation issue, once you have a reasonable localise estimate on how much people are willing to pay, finding the ideal price is trivial.
Unless there is a public expectation like games being no more than 60$, but then companies try to break those expectations too, that is why lots of releases have special editions with BS addons. to test the waters
Highest price is not necessarily most best for profit. They likely calculated that selling it for 70 or 90 means less profit then selling it for 80.
the higher price means less purchases,
It is an optimisation issue, once you have a reasonable localise estimate on how much people are willing to pay, finding the ideal price is trivial.
Unless there is a public expectation like games being no more than 60$, but then companies try to break those expectations too, that is why lots of releases have special editions with BS addons. to test the waters