I've been out cleaning my car today and have noticed that some s@dd has swiped one of the headlight wiper blades.

Went down to local Halfords - they don't stock them.
Looked on ebay - £12 ish for a pair.
Does anybody know where I can buy just 1 - or maybe somewhere cheaper to buy 2?
I certainly don't want to go to my dealer as they are likely to be over 50 quid knowing them.

Thank you