Look at my thread...
http://foc-u.co.uk/index.php/topic,16810.0.htmlI got a FZS1000 rear from ebay US - 51£ total delivered but i was lucky!!!!!
Last one i saw on UK ebay went for 110£
Regards seals, i ordered pistons as well as seals from USA, and the large cost made it worth while....
If you buy just seals alone then may be similar price from UK as lower shipping...as opposed to US Air Mail and potential customs taxes...
Have you also considered getting them serviced - i don't know what there work is like but have heard good things and its going to cost me around a hundred to get all my calipers sorted when the pistons arrive, i will box the lot and send it to them to fit and service for me
http://www.powerhouseautomotive.co.uk/content/motorcycle-brakes/motorcycle-brake-caliper-services.php, they have been prompt and helpful in conversations so far...
Having said all that the use of a FZS1000 caliper is popular if you can get one, fitting needs a little bit filing off and a few washers, but i am yet to try - will report back when i do!
A few on here have done it...
Anutz