RCW 46.70.125: Used vehicles—Asking price, posting or disclosure.

A vehicle dealer who sells used vehicles shall either display on the vehicle, or disclose upon request, the written asking price of a specific vehicle offered for sale by the dealer as of that time. A violation of this section is an unfair business practice under chapter 19.86 RCW, the Consumer Protection Act, and the provisions of chapter 46.70 RCW.