I'm using this component on two client's sites and it is a perfect way for them to sell PDFs and other digital downloads stored in DOCMan. The developer, Deian, was extremely helpful in troubleshooting and helping us get things working. It turned out that one of the files we were making available was too large for email and there wasn't even a problem with the component. Deian spent quite a bit of time with me making certain that it was working correctly. The new version that adds a shopping cart option is on our list for implementation as soon as we get a chance. Thanks Deian for a great component and keep up the great work!