WTD: Part for Campag Mirage rear derailleur

[Ian1]

Has anyone please got a mashed / broken 9 speed Mirage rear derailleur or do they know where I can get parts for one. I'm after part number RD-VL009 (as shown in this link: http://www.campagnolo.com/repository/do ... es06_A.pdf ) It's the stop(?) that sits against the hanger but I've only located it in the USA and they wanted around £30 plus postage for it!
Any help or advice gratefully received.
Thanks.
Ian