[bonyhadi]

I don't know Arizona law, however, here is the story if you live or want to register the car in California.

1. A private party sale would be just that and the seller wouldn't ever charge
sales tax in any state.

2. A dealer will always try to charge sales tax, unless you get special transit tags.

3. When buying at an auto auction you will be charged local, state and city
taxes unless you have an ICC carrier remove the car from the state.

4. When the car is registered in Ca. you pay sales tax based on the amount
of the sale as shown on the bill of sale.

Check with the Arizona DMV, or someone in the auto trade.