I have for sale a Nikon TC-200 2X teleconverter. It's superb quality and as good as it gets in teleconverters. This one is mint and unblemished. Dealers are selling nice ones for £120. I'll send it to you, postage included for £60 It has to go so I'm open to sensible offers before it goes on ebay.
Full details and review here....
http://www.kenrockwell.com/nikon/tc200.htm
PM me if interested.