Whelp... time for an update.
Went to the dealership today and picked up mah RAV4 Prime.
Everything went as smooth as butter - which I was really pessimistically thinking wasn't going to happen. I paid MSRP (which is what I expected). There have been NUMEROUS stories across the US of dealerships trying to charge people over MSRP because this vehicle is so rare. I believe they are only producing 5000 of these this year. They didn't try to screw me over on anything.
On top of that - I came in with a trade-in. There is also a sales-tax advantage here in Texas, where your trade-in basically knocks the trade-in amount off your purchase price, and thus you don't pay sales tax on the amount being traded in. It's always worth considering/calculating that part.
I came in armed with a few offers - one from CarMax, and one from another popular online VIN-based used-car buyer. The dealer actually beat both of them so I didn't even have to bust those out to argue. Nice.
Love the Prime. Premium package with the XSE makes it really damn nice. Awesome quality, great pickup, etc..... My wife names all the vehicles so it only seems logical to go something like Optimus Prime.