If you've been on this site long enough, you'll notice other cities with "city" in the names don't require it as part of the answer (i.e.new york, ho chi minh, etc.)
I got 16/18 knowing the UK version, plus I remembered what the most expensive square on the US version was called. No idea for the NJ city or the railroad state, though.
17/18 from the British version, which is what we use here in NZ. Never heard of Luxury Tax, though, we have Super Tax instead and it costs $100 (which coincidentally is not too far off exchange rates lol)
I only know the German version = got only 5
I was thinking junior...