I got a cheap one off eBay, seems they do not hold any stock, then if they get an order will buy one and then spray it the colour your ordered, hence the 15 day delivery.
It does not fit that well, and a keen body shop will spot the finish is a bit off also.
I had a scrape on a country road, crushing the wing and bit of the door, broken wing mirror, slight scratch on headlight. Authorised VW repair centre, quoted £2800 for repair, so if used insurance would have been written off.
Got the (dodgy) wing and new door, plus paying a local body work shop to change all the stuff in the door over, polished out the scratches, all for £500