Well it's not broken, one of the mounting brackets has snapped near the top, I could even get this repaired but it won't make a difference to fitting it.
The reason I'm selling it is I bought it but didn't realise my lamps have the black insides not the silver, so I had to purchase another one, see the link here and you can see how much they are going for on ebay, £112!
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=220658544202&ssPageName=STRK:MEWAX:IT
So £20 isn't really a sensible offer when these are £300+ from BMW and second hand ones from scrap yards are £150 (believe me I've looked everywhere!!)