I have a set of Formula oro K18's for sale, they need a repair done on them but the part is cheap at £13.99 here >>
http://www.chainreactioncycles.com/Models.aspx?ModelID=22474 , if you are a little handy with brakes then it is a very simple job, i would advise that they are bled too beacuse they have been sat for some time in my shed, but again an easy fix if you are competent with bike maintenance.
Im open to offers on the brakes....