Rear Metz (and Avon Cobra) run to around AU$415 - $425 fitted. Triumph dealer charges a lot more, btw. Not sure if any of you guys in Queensland or Sydney or elsewhere in Oz can get them any cheaper but I did a ring around only a month or so ago and the price was pretty consistent. One place was cheaper but made up for it by charging for fitting - same total. Had mine done in 25 mins while I waited at Joe's - and checked out gear and helmets to fill in the time.
From what they charge in US and UK, we're getting screwed.