That’s a useful tip about Mullvad taking cash. I have a gratis VPN which offers some degree of pseudo-anonymity, but generally VPNs do not give anonymity because there is just one relay and that relay sees both sides, and worse: VPNs have a limited number of users and browser fingerprints trivially distinguish users among the small pool of those using a particular VPN.
A VPN would be secure enough for the case at hand, but in my case the VPN blocks Tor, which means Tor and the VPN are mutually exclusive. Thus I have the hassle of disrupting Tor sessions to switch the VPN on. And again, it’s not a /me/ problem. This public service is discriminating against the Tor community in an obnoxious way (packet dropping). The problem is not whether or not one marginalised person can circumvent the blocks. The problem is that a public service is not serving the whole public.