Sorry but you're barking up the wrong tree. I use reprepro to host gpg signed packages (accessed over ssh so no ssl required) deployed from a vcs repo. The setup of the repo server itself is even handled through an apt package (hows that for self bootstrapping)

Even if I were interested, the obsession with ridiculous pricing structures means I could never use your service. Seriously how does 1 5mb package cost you more than 5 1 mb packages.

$100 a month gets me a hell of a lot of resources to host packages, and funnily enough it doesn't stop working or demand more money because the package count hit some arbitrary number.