Preferred methods of payment Personal check, traveler's checks, certified check, or money order, made payable to SWRS. If you need to use a credit card, please purchase a certified check, traveler's checks, or money order with your credit card. We ask that you keep in mind the Station is a non-profit organization and fees for credit card charges continue to increase. Otherwise, call 520-558-2396 if you need to pay with a Visa or MasterCard credit card. If you reside outside the United States, please submit your payment in the form of a certified check, money order, or bank transfer in the net amount of your fees in U.S. Dollars. As above, if you need to use a credit card, please purchase a certified check, money order, traveler's checks, or arrange a bank transfer with your credit card. Please contact the Station to obtain details for a bank transfer to SWRS. We ask that you keep in mind the Station is a non-profit organization and fees for credit card charges continue to increase. Otherwise, call 520-558-2396 if you need to pay with a Visa or MasterCard credit card. Transportation costs between home and Tucson (air) and the SWRS (auto) are to be borne by all participants. As participants register, we will send out email addresses so that participants can contact each other to carpool to and from the station.