The UK economy is worth $2.849 trillion that's:
UK
Total worth: $2.849 trillion
$43,770 per capita
(per person)
By your calculations this is similar to the per capita worth of the players on ZARP which you calculated at $48,000. Bear in mind we can't calculate an exchange rate unless we make some assumptions so we cannot create an accurate comparison of the GDP measure. Other measure comparisons are possible.
By this calculation we can safely say the ZARP economy closely mimics a real one and is in a very healthy state indeed.
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