It seems like an inane reply but it depends how much you want those airports and aircraft, really. There are thousands of airports in the game and many of them have been excellently modded, often for free (check out flightsim.to). So unless you have a particular interest in that specific list of 10 airports, then no, it isn’t worth it.
And the same goes for the aircraft. Bear in mind all the stock airliners are pretty much broken, so the 787 is already out. Of those that remain, again, unless you must have any of them, it isn’t worth it. There are plenty of aircraft in the base game - and general aviation is exceptionally well covered - and again plenty of mods and third party aircraft out there.
Personally I’m perfectly content with the base game. The money I saved not getting the premium version will go to third party aircraft I actually want, when they’re released. And a great number of those third party aircraft will be better modelled than the Asobo planes too.