Don't give Desert Toyota of Las Vegas your business. They verbally committed to MSRP, but when the car showed up six months later, they told me they had to add a $2K market adjustment. When I told them I wanted my deposit back, they then said the markup was negotiable. This was about 18 months ago.
Toyotatown of Stockton has three in stock at MSRP. Give them your business. A handful of people have had negative experiences with them ("the salesman wouldn't return my calls, waaah waaaah waaaah"), but the vast majority that I've heard about have been positive. I bought our second Prius from Toyotatown of Stockton; if I was smarter, I would have bought both of them from there.