I'm in the UK and we use 'mobile broadband' for our domestic Internet connection. So a mains powered router box that connects to the local G4 (or G5) mobile data network and provides wifi and a few cat 5 sockets. We don't need to subscribe to a phone line (e.g. last mile supplied by Openreach/BT or fibre from Virgin or whoever). I pay a single flat fee monthly by credit card. It is reasonably fast and meets our modest needs. There is no hard data cap. We average 150 Gb per quarter or so.
archive.org is blocked (along with other nsfw type sites), but as the last post in your link to an earlier discussion says, I could get it unblocked by filling in a declaration that I'm over 18. Paying by credit card isn't enough to unblock automatically for this particular package.
I've chosen not to unblock for no particular reason. The block sort of makes sense to me because archive.org records a lot of Web sites, some of which may have what is regarded as adult content, and it is unreasonable to expect archive.org to label individual records of sites according to the criteria the UK uses (each country probably has its own set of criteria e.g. gambling Web sites of certain kinds in the US).
archive.org is easily accessible in the UK from most wifi connections in cafes, libraries and, hilariously, colleges (where people under 18 gather in large numbers), and also from domestic adsl or fibre Internet connections.
