Earlier quoted context omitted.
If the sane price is an optional "Donate to keep this site going" link, then ok. But only free access, without authentication or payment, to scientific papers, is sane. IMHO.
Might this be a case where the best resolution would be to have the government (which is at least partially funding nearly all of these papers) step in and add a ledger of papers as a proof of investment? The cost of maintaining a free and open DB of scientific advances and publications would be so incredibly insignificant compared to both the value and the continued investment in those advancements.
Also, a per-government ledger would not be super-practicable. But if, say, the US, the EU and China would agree on something like this, and implement it, and have a common ledger, then it would not be some a big leap to make it properly international. Maybe even UN-based.
That's a pretty big "if" though.