If you don't require genuine, I have this bookmarked (in case I ever reco. my Virgos):
http://www.ebay.com.au/itm/260745370838
I like sticking to original Volvo items if I can. However I prefer these to the originals. Because the outer edge of these ones is rounded, with the square edge slightly recessed. (Genuine all-square ones quickly show damaged edges from being removed/replaced.)