I've bought cars from all over the world (Boston, Niagara Falls, Calgary, Japan), and I've got to say, there is no way you are getting a good enough deal to justify the shipping or travel/fuel/lodging/food costs of buying a 4runner from Alaska and driving it back. Unless you are interested in the adventure (which is often the case with me), then you are further ahead looking much closer to you.
I pulled up Google maps and quickly determined that it is nearly 2400 miles from Anchorage, AK to Spokane, WA. It would be an amazing drive, so if that's what you're after then so be it.