Another smooth transaction on my desktop. I think tying the purchase to a permies account is pretty smart. I can definitely see issues with using mobile or ipad.
One thing I would like to say on the mobile front: I just logged in to permies forums from my phone. I went to permies.com, and clicked the sandwich menu in upper right hand corner, and intuitively I was looking for "Login" link but didn't see it. I did figure out I had to click forum first, but Login might be a menu item to add.
Also, another issue with the download: sometimes I want to purchase something while I am on the go (mobile) and then download it on the computer later. In this current system, I did not receive an email with a link back to the thread to download the item. I did receive the paypal receipt. I personally would like to see a way to get an email with the download link both as a reminder I purchased and where to get it, but an easy way to get back to it.
Hope this feedback helps. If my purchasing habits were strictly on desktop, the current system is pretty darn good. but email link would help on both mobile and desktop.
thanks!
-bryan