No more than £150.
Although, I have absolutely no idea how much they cost in real life. But this seems a good figure.

/not helpful
( Jobe http://www.flickr.com/photos/joefreeman, Thu 15 May 2008, 14:34, archived)

thanks

( spangolin laughs from the dark of the wilderness, Thu 15 May 2008, 14:34, archived)