Doing some research for this article ... and thought of a guessing game.
OK, one of the highest resorts in the world (well, in the top 40) has a lift pass that works out at around a tenner ... for a week! Can you guess where?
Not sure how price per km is useful. This would only be a fair comparison if each area was limited to the same number of people using it.
However a large area is used by more people, hence the more revenue from passes.
Also - it's not directly proportional in terms of value to the skiers. Let's say I'm happy to pay £40 for an area that covers 100km of pistes. That doesn't mean I'd pay £400 for an area covering 1000km!
Matt