Just looked on Toyo.com and the door card price is about right, well not right for what it is if you know what I mean.
Had a look on Fleabay but none being broken and with around 12 different colours not much chance of getting one 2nd hand.
There is a GS450H 2008 with one owner and FLSH on there for 11,495 so how do they justify that price just for a door card!!!!!
Just remember you may get hit for VAT and import duty if you buy from the USA have you considered contacting ACLex for a quote?