Sean from The Tuning Works offers an international service (I believe Langdons does the plating) for around GBP120 a barrel, and another 40 if you need the bridge fixed too. Could be worth asking him if he'll handle NSR stuff too, it's definitely cheaper to ship them there and back than it is to get them done locally here in NZ.

http://www.thetuningworks.co.uk/store/product_info.php?products_id=708