Selling Licenses to make money online (and offline) is a cool way to make profit!
If you find a good product (which is easy to say but hard to find!) which you can sell by buying a license is like buying a kind of McDonalds (franchising).
If its a working “store” with an understandable manual instruction aka Step By Step Plan on what you have to do, where you find people and how to run traffic: you´ll win!
I personally use THIS ONE (same as explained in this video) and as you saw at least in my First Episode of the nerd TV: it works fantastic.