search the forum archives. i think i got my chrome bullitt door for like $30 but i don't remember.
whatever you do, DO NOT buy the chrome one. someone did a REALLY crappy job chroming mine and it's all coming off and it really doesn't look all that good anymore. still better than stock, but not that good.

i'm going to try and find a stock, brushed aluminum one. hopefully that won't corrode in under 6 months...