You don't need to be an 'investor' to invest in Singletrack: 6 days left: 95% of target - Find out more
??
Formula importer would be your best bet.
E bay... I seen a a new set complete with rotors that ended at £41
I bet you won't get a lever for that as a spare part
You have to replace the whole lever body / master cylinder. I think silverfish are the importers and I got one thru my lbs for about £45 for the Mrs' bike. Personally I'd put the money towards something shimano, my C1s made a racket and ate brake pads in hours.
I upgraded to from C1 toXTs and gave the C1s to my son. I broke the lever at the base where it grabs the plunger. I though the power delivery on these was good but difficult to center over one of the rotors as one of the positions wouldn't move as freely as the other.
I'll look on eBay though Thanks. Failing that the importer.