WAC 314-11-085
WAC 314-11-085. Do I have to sell liquor at a certain price?
(1) Liquor licensees must sell beer, wine, and spirits at or above the licensee's acquisition cost.
(2) An exception to this requirement is that on-premises retail licensees may give a customer a drink free of charge under limited circumstances, such as a customer's birthday or to compensate for unsatisfactory products or services. Free liquor may not be used in advertising or as part of a promotion.