I would like to make a single purchase on Unity Pro and my question is about this.
To be able to produce a fully licensed PC game, that belongs to me, and so I can collect personal revenue from it, will it enough to buy a single copy in the “Buy” Tab → Unity Pro (1500$)? Will the program bind to my account?
Yes. There really is not much else I can add other than PC, Mac and Linux builds will all be possible from that license. It’s the same setup as I have. For Android etc you need to by an additional license. This may help also: