KWIK Trip Car Wash Purchase Pay for your KWIK Trip Car Wash Card(s) After making your payment, card(s) will be mailed to you! Click the button to pay online with credit card, or see instructions below for mailing a check. Paying by check saves the RPSC some $$ on credit card processing fees. Pay $36 per card, includes credit card fees . Please indicate quantity in the Pull Down window. NOTE: If on cell phone, click on Detail [arrow down] in upper right corner to adjust quantity. If you are mailing in your order, make check payable to: RPSC and mail to: RPSC P. O. Box 288 Sheboygan, WI 53082-0288 Pay $36 for each card ordered... Cost of Multiple cards: 2 = $72 3 = $108 4 = $144 5 = $180 6 = $216 7 = $252 8 = $288