I paid $40,500 out the door for a 2007RX350 MSRP $44,306 premium plus with nav 2wd...that was all taxes, tags, title. I was also allowed to use the Lexus credit card for $10,000 which give me $500 service/parts credit.
The net car alone cost works out to $38,350 or 13.4% off list.
The only thing that bothered me was the attempt to try to sell a massive number of warranties at closing...all with huge markups. I bought none.