For what it's worth, I bought my last two cars from out of state dealers. The first came from a dealer in Des Moines. We did everything via FAX and email, including a credit union loan. I kept the final check until delivery. The dealership put one driver in my car and a second in a 'chase car'. They drove nearly 500 miles to Srn Illinois where I could inspect the car and either accept or refuse it. I handed over the check and signed the final forms in my garage and the folks drove back to Des Moines. Absolutely brilliant!
The second was a car I found in NH. Email and digital pictures got me most of the info I needed. I 'interviewed' a salesperson as they walked around to check specific parts of the car. The initial purchase order was prepared via FAX; the deposit went on a credit card. I got a 1-way flight from San Antonio to NH, completed the deal, and drove home.
Registration was easy and normal. I paid the difference in sales tax only. Dealers that work long distance understand that there's more risk for both parties and tend to be a bit extra helpful. I wouldn't have any trouble at all buying from an out of area dealer that wanted to work with me.
For $1000 below MSRP, I'd fly to the West Coast and have an adventurous drive back home.