Getting out the word that HumbleBundle currently has a Discworld bundle, offering 39 Discworld books (is that all of them? I think it's all of them) for a donation of $18 or more benefiting Room to Read, a charity that supports literacy and gender equality in education.
Here you go: https://www.humblebundle.com/books/terry-pratchetts-discworld-harpercollins-book...