just do like apple does with taxes. create a subsidiary. dropbox.com, charges $x for 5GB idropbox.com, a dropbox company, optionally in the caymans, charges

just do like apple does with taxes. create a subsidiary. dropbox.com, charges $x for 5GB idropbox.com, a dropbox company, optionally in the caymans, charges $(1.3 * x) for 5GB and has an app.