This extension does exactly what it says it will do. It even sends a file to the buyer in the email along with a redirect to your purchase page.
Only downfall was having to buy the manual just to find out what paypal codes I needed, but that's my problem and the Manual (for $2) answered my question right away! :)

Thank you!

I have used MANY different form components and none of them have come close to ChronoForms.

It was fast and easy to install. The Form Wizard was great for making my form, with more options than others (such as facileforms) and SOOOO easy. I had it up and published in less than a half hour with just one question for the forum that I found an answer to immediately!

Only downfalls I have found so far:
Cannot edit a form once you've saved it. (although it's easy & fast to redo so you'll survive if you have to start over)
Cannot remove a link to joomla professional...unless you buy the $25 license.

Overall great product, so much so that I bought the license :)