[gruez]

>the absolute guarantee legally that they could not and would not either collect, or sell my information as part of that payment.

I don't think that's a strong enough requirement. Google doesn't sell your information (it's too valuable for them to do that). Instead, they use it to profile you for better targeting. So them not selling your information doesn't mean much. The same goes for not "collecting". Even if they don't fingeprint or location track you, they still have access to all your emails which is still a treasure trove of information. You can't tell them not to collect it because they need to to operate a mail service.

The only acceptable solution in my mind is end to end encryption.