Installation of Quicksell was simple and straight forward and set up was a breeze. The only issue I ran into was trying to get Quicksell to run successfully in PayPal Sandbox mode. I contacted Deian via email and he responded within 24hrs as noted on his site. Come to find out there was no issues on the component end and it was my (human) error instead. But! before going live Deian took the support a step further and offered to test Quicksell live on my site just for extra measure.
I would highly recommend this component for your paid downloads/files. I have tried others like it but Quicksell rises above the rest.
Thank You Deian for the most excellent support!