UK price of instruments vs US

Howdy howdy howdy 

I'm kicking around the idea of selling a Flatiron mandolin to help finance my move to the UK.  It's very nice and has become somewhat of a collectors item since they aren't made anymore. 

The only reason I can think about selling it is that - in my opinion - it is replaceable.  I can totally see myself with another mando, being just as happy.  Plus, I can get around $1000 for it.  I have other instruments I can play for now (that really aren't replaceable)and some day in the future, I can get a new mando.

How are instrument prices different between the US and the UK?  Is it a better idea to ship it over and try to sell it there or do I "take the money and run". 

Anyone know?

  Holly