RCW 63.14.150: Retail installment contracts, retail charge agreements, and lender credit card agreements—Agreements by buyer not to assert claim or defense or to submit to suit in another county invalid.

No provision of a retail installment contract, retail charge agreement, or lender credit card agreement is valid by which the buyer agrees not to assert against the seller or against an assignee a claim or defense arising out of the sale, or by which the buyer agrees to submit to suit in a county other than the county where the buyer signed the contract or where the buyer resides or has his or her principal place of business.