I just went in late Friday (about 7pm, they are close at 7:30) to Sterling MCCall Lexus (South 59). I live about few miles away. They offered me 40,000 on the same car I got and I said if they can do 36,000, I'd deal tonight. He spent few minutes with his manager and came back with 36,500. I said that's it and about to walk out. He told me to wait and talk to his manager again. He came back with the deal. They offered me 6.99 APR on financing but I didn't agree. I deposited $1,000 to hold the car and went home, did some research and got the 5.5% with Capital One. Talked to them in the morning and they matched the rate. Picked it up few hours after that. So far very happy with it. The funny thing is I don't know if I can even get a better deal since I only gave one number (36,000) :)
If anyone wants to know the sales person, pm me.