This is LA... Everyone wants the latest and greatest car, right now and before anyone else. It may be a different story elsewhere.
I get it, I live in LA. But I'd never ever pay such amounts over MSRP, purely based on principle, even if I was a millionaire and could easily afford to overpay.
I may however do so for an incredibly well-designed, non-volume product with a short production run knowing that its costing the maker a good chunk to produce it and that the maker could not sustain steady profit stream selling these due to the short number of units, and then only it would make sense for me to hand over any large bills to the dealer for the markup, primarily due to the fear of missing out on owning one. But, again, the product itself would have to be absolutely well-designed/engineered to justify that extra cash.
With LR, I could imagine doing so only if they ever produced a real special edition, slightly refreshed/de-blinged LR4 with an SCV8 or a TDV8, but certainly not for a general volume production SUV.