cbroz-
I'm in the same boat actually. picked me up a 02 GS430 without the rear spoiler. I've posted for recommendations.. they might still be availible. I ended up going for an aftermarket myself for $169 already painted to factory specs. I'm waiting to come in and once in, I'll have to have it installed..
Still waiting on a recommendation from Mrsypher on a local body shop.. B)
To answer your question, I did not hear that from the LEXUS dealer. I recieved a quote for $1300 and change so..hope that helps..