Since their fares are not comparable since they don't let anyone show theirs in the same list as other airlines, you really cannot know if they are cheaper or n

Since their fares are not comparable since they don't let anyone show theirs in the same list as other airlines, you really cannot know if they are cheaper or not. In reality this means they are able to set their prices on average higher than those who have to compete in a list. Better control vs. more exposure.