Firefox’s free VPN will offer 50 gigabytes of monthly data, which is pretty generous for a browser-based VPN. A Mozilla account is required to make use of it, which isn’t a hardship (they’re free), but is a point of friction some may wish to know upfront.
Make a crypto wallet add on. Make a VPN with crypto payment channel settled once a week. Charge fair price of 2-5 cents per GB.
Alternarively use probabilistic payments but that’s bit of inconsistent for the end user
Go use brave if you want to use a crypto trash browser
Remember when people said “go to Brave if you want a built-in VPN trash browser”?
Just give it a few months
*crapto