@Sifres
The storefront was easy to setup, but
I have a half finished website. I was just testing it out, but seems to be really great so far.
...and I havent tried that JUCE module that can work with License activations.

I've got a preliminary Install Plugin up and running for setting a custom installation path for the sample directory. It's embedded within a .pkg built with Packages and I have a rough idea for resolving the one current caveat, which is that installation proceeds first through the /tmp directory. The other major caveat is that this is a Mac OS-only solution.

I'll post the code and .bundle soon. Eventually: a recipe proposal.