MahdiG35

Hi I just joined this forum :) I drive a 2006 Infiniti G35 coupe and we are looking to buy a new car for my sister. I went to my local dealer and test drove the IS350 (since that was the only one they had), but IS350 is kinda to pricy and also I am sure she is not going to need that extra 100hp. What kind of discount can we get on it?? Off the msrp or the Sticker price. We want the navi on it also, and just the RWD automatic. Thanks Mahdi