dont forget the insurance per person as well!
I understand it from the view point, they let everyone else do their advertising, and once they got enough confirmations they decided to charge people to "experience the experience"
I think its cool they are trying to preserve these places ( although some they do little in preservation
) Through allowing people to "hunt" there, although I think they should make it far less if you want to host a group or public hunt, as the word gets out more will want to investigate, hence they will still be racking in the dough..
sometimes its all about the Benjamin's