Looks like a great project, and one sorely needed by people like me who find themselves trying to get hold of old books they can't get in their local library and that are too expensive to buy secondhand.
As far as I know Standard gets their raw ebooks from Project Gutenberg which has a vastly greater collection of public domain works. What they're doing is typesetting them for the average reader. But if all you're looking for is just the content, Gutenberg is the place to look for ethically clean copies.
The shadow libraries such as Anna's Archive are a treasure trove of old books, and you're not breaking any imaginary law by downloading old books which are out of copyright.
mariusor|11 months ago
carlosjobim|11 months ago
zozbot234|11 months ago
charcircuit|11 months ago
HexPhantom|10 months ago