Well they are $249 new - you'd have to pay postage on a new one too so it depends howmuch you want it! You could just use buy it now and at least you know you've won it!
Have a Sargent seat myself bought recently from the USA for $200 including postage. Must say it is a huge improvement over the original which I slipped and slid around on far too much. If you buy from the UK stockist they want £199 plus £7.50 p&p if that helps
Red, the number is 01550 740655. I think they are the chaps that import them but I'm not 100% sure. They do have them in stock though and will sell you one. Can also get them ordered in if you want something that they haven't got at the moment.