Is there anything specific about AZ that people from other states couldn't answer?
I purchased from MD and live in FL. They did all the paperwork electronically. They then reached out to multiple vendors for delivery, stated a price that I agreed was fair for shipping/delivery, and the truck was delivered to my door in 2 days. I paid the driver what was agreed to.
Now, being that the truck was purchased out of state and MD had to deal with the Florida registration process, there were delays in getting the plate transfer completed, but that was the only issue with the entire process. And that was a FL DMV issue, not MD.