"With this purchase, you will be activating your VIP membership" is in the sidebar. It's at body-copy writing, and you have to go looking for it.

This is a combined "Forced Continuity" and "Sneak into Basket" set of dark patterns that doesn't even given you the in-line checkbox to uncheck:

* http://darkpatterns.org/library/sneak_into_basket/

* http://darkpatterns.org/library/forced_continuity/