http://ssd.iykpqm7jiradoeezzkhj7c4b33g4hbgfwelht2evxxeicbpjy44c7ead.onion/module/choosing-vpn-thats-right-you
What is the business model for the service? Some VPNs run on a “freemium” model, meaning they are free to join, but after you hit a data cap they charge you. VPNs can be entirely free, but sell your data. They can use a recurring subscription, which will keep charging you if you forget to cancel.