Found this on eBay (while continuing my search for the genuine aero bumpers, curse you @Racy Jace ). I've got no connection with the seller, I just thought this might be of interest to somebody as it is very cheap. The advert rightly notes that new these are about £100, and on eBay Honda dealers usually charge £80 or thereabouts. One thing I do know is that this fits the pre-facelift only. The shape for the facelift model is slightly different, and the part has changed.