How much did it cost when the US bought the Virgin Islands?
The United States paid 25 million in gold coins for the Virgin Islands. The islands were purchased in 1917 from Denmark.
I don't believe that there are any laws which limit how much cash you can take OUT of the British Virgin Islands. But going out of the British Virgin Islands usually means going INTO the United States (either the USVI or Puerto Rico), and if you carry over $10,000 in cash or negotiable instruments you need to declare it.