I will start selling my ebook in a few days. I prepared the landing pages and everything, but I have a problem with the payment. I will be using PayPal for this. I have seen that the paypal button can take the user to a specific page after payment. The problem is that anyone can access that URL if they now it, so they can download the eBook without payment. Is there a code that I will have to embend in my download page so that the download button will appear ONLY if the user has payed first (not directly access the page by entering the URL in the address bar of the browser).
use Paypal IPN's to control the downloading process, make a table that will insert emails and transaction details. or you can use payloadz system
payloadz looks really cool Is is really free to use? Or are there any hidden fees or transaction fees?