If you live in Norfolk England it should be much easier and less expensive for you to find a Lunar than if you live in Norfolk Virginia.
The best place to find a Lunar for sale is on Ebay-UK.
There is one available there now ->
In 4 days you will know how much Lunars are currently selling for.
I see them typically selling for anywhere between 400-600 pounds depending on their condition and bottle color.
Safely shipping a Lunar w/bottle from the UK to the USA costs around 125 pounds.
Lunars may cost a lot but you do get what you pay for - The best lava lamp ever made!