I just found out that Humble Bundle has a book bundle for Terry Pratchett’s Discworld. A 39 book bundle that is redeemed through Kobo.com.
Edit: Only available in the US.
https://www.humblebundle.com/books/terry-pratchetts-discworld-harpercollins-books
https://archive.org/details/discworld-complete-43-books-by-pratchett-terry-z-lib.org
And for those of us who can afford it, the bundle is a great way to loosely support the actual author (or his estate, in this case). No shade thrown at any book sharing because that’s what libraries are for.