Miamipanther
Just FYI, i looked at getting buying my M in California instead of the Seattle area and found out that in order to avoid paying tax in California and Washington you have to ship the car at least to the California Oregon border then drive it home. If the car is driven at all in California they have to charge the tax then Washington will charge it again when you register. Shipping quotes I received from the bay area to the Oregon border were $800 and not worth the savings you get in California. If they are trying to charge for locks and mats I know what dealer you are referring to. The other one in the area is much easier to deal with. PM me and I am happy to give you a name of a CA that will give you a no nonense price.
Another option is to look South in Portland, both dealers down there seem more motivated to move inventory. When you buy in Portland they will register and collect the Washington tax for you.

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2013 BMW X5 M