There's a free version of Gumroad and you can sell things with a pay what you want scheme: https://help.gumroad.com/11164-Payments/pay-what-you-want-pricing ht

There's a free version of Gumroad and you can sell things with a pay what you want scheme: https://help.gumroad.com/11164-Payments/pay-what-you-want-pricing https://help.gumroad.com/11164-Payments/pay-what-you-want-pr... The premium version of Gumroad is $10 per month, and reduces the cut they take. There's leanpub too, though I don't know if you can upload an already made pdf. Worth checking out though.