First: That’s the price for an year and you have the option buy the version for £15 monthly and use it within your game after that, you only need an active subscription for the editor.
Second: “what a joke”? Are you implying that Middleware is not worth it? I don’t see an with £15 for a decent sky system (Even though the support could be way better). Paying a programmer would cost way more and would take a immense amount of time in comparison.