It's all over the board, even at the top. Top racers are making bank. For the past few years Bode was reportedly pulling $2-3 million annually.
Freeskiers are obviously making less, but those with worldwide exposure and major endoresments like Red Bull and JL can't be that far behind. On the other hand, Seth (who's probably the most underpaid skier out there) has said that his pay is far from being called wealthy.
Probably the biggest hit for freeskiers is not competing in the Olympics. An Olympic gold in a major event like skiing or snowboarding is the quickest path to instant millions.