So about $800 in HDDs. Steep but reasonable for all the knowledge man has acquired so far.
Unlike wikipedia, they don't offer a full torrent of the site, so it's hard to estimate. I guess the closest point of comparison would be Anna's archive index, since they have a rough filesize total?
I should seed Wikipedia
*If it is older than 2023
I have been more often disappointed by sci-hub than satisfied, but maybe I just tend to look up more obscure or new research.
Sadly not always. Perhaps 80 % of the papers I try to find are there and perhaps 60 % of the books.