Lexus Plus… I love it. I’d take that as a good opportunity to turn and run.
I second the suggestion to work with @nextlevelautobrokers because he’s awesome, helpful, and hugely competent. Should you wish to pursue independently, I offer you the following California Lexus numbers as a means of understanding.
You’ll certainly notice that there’s no NX mentioned there… which, to me, speaks volumes about the discounts available. If there were deals to be had, I have to figure @CaliforniaLeaseDeals would have mentioned them.
I also take this as a good indication to look at another car. People seem to love their RXes and, having driven neither of these cars, would certainly prefer the RX to the lesser vehicles.
Given the numbers listed, my gut says there’s $120 per month difference between the RX base and the NX you’ve listed ballparking lower DAS and an upgrade to 10k miles (you didn’t mention). Maybe $40-$50 difference in the RX’s favor for the fully loaded with Nav. I did some monkey math here, so I ain’t exactly accurate, but I’d say my numbers are within two standard deviations of what actual should be.
The RX should be way, way more car than the NX. I’d recommend that route, researching Edmunds numbers more. If you’re lazy (don’t enjoy this sort of math/negotiations, want to save yourself the hassle, and smart), just contact @nextlevelautobrokers