cannot believe the price difference

[siliconmix]

http://www.google.co.uk/products/catalog?hl=en&sugexp=frgbld&gs_nf=1&cp=11&gs_id=3&xhr=t&q=C6074-60400&bav=on.2,or.r_gc.r_pw.r_qf.,cf.osb&biw=1024&bih=649&um=1&ie=UTF-8&tbm=shop&cid=1365297169053125827&sa=X&ei=W7xpT_yKMeSk0QWm

[T4P]

Saw £105.00 for a used one . DAFUQ ?
And the next worst one is £47.38 .
None of them are even below or at 24pounds