This is the store where I sell my mods (mostly Zen Cart).
Live Site: http://www.thatsoftwareguy.com/store
For years, I would distribute software manually. I’d get a payment and then email the software, either from my desktop or from my Blackberry. Why didn’t I use Zen Cart? I know, it seems crazy. Honestly, I was just too busy building sites for other people to build my own.