Alaska Stat. § 45.45.150
The shop shall post a conspicuously located and easily readable sign that states:
"You are entitled to a price estimate for the repairs you authorize if you request the estimate before the repairs are begun. This price estimate will not be exceeded if the motor vehicle is delivered to the shop within five days. After the motor vehicle is delivered to the shop the repair price may be less than the estimate but will not exceed the estimate without your permission. Your signature on the repair order will indicate your authorization of repairs at the price estimated.
You are entitled to the return of any or all replaced parts, except parts which must be returned to a manufacturer because of warranty and/or exchange agreement, if you request the parts at the time your order is taken. Those parts which must be returned to the manufacturer will be made available for inspection to you when you pick up your vehicle if you request the parts at the time your repair order is taken."
AS 45.45.150