[Percent]

Buying a VPN to use a paid service (Netflix), versus buying a VPN to use a free and greatly more vast service (piracy).

Stating the obvious, In terms of the latter & compromising entities and the like, never provide Identifiable payment when purchasing a VPN.

It defeats It's purpose of anonymity.

It's easier said than done to provide non-identifiable payment, though. To purchase bitcoin on most exchanges, you are required to provide identifiable information. To purchase Visa gift cards, you are walking into a store, buying the card with your own form of payment, and have a witness or two (along with the potential for being on camera).