The base price just went up $300 for orders placed after mid-March. I think the destination charge is usually $515, although I'm not sure it's the same everywhere.
I think that option package #1 is the rear window wiper, and costs $180. Some dealerships may call this a "base" model.
Other than that, you may check if one of the dealerships adds pinstriping to all it's cars (about $150) or if there are any other dealer add-ons that aren't standard Toyota options. Some may include the floor mats ($184 sounds familiar), cargo net, or other options. Other than that, some of the dealers may just be lying about selling at MSRP.
I know there have been threads that listed the option packages and prices. hat should help negotiations.