Wash. Admin. Code § 230-10-190
(1) Bingo licensees may use a single discount level for each type of card sold on electronic bingo card daubers, if they:
[Statutory Authority: RCW 9.46.070. WSR 07-10-033 (Order 610), § 230-10-190, filed 4/24/07, effective 1/1/08.]