RANCHO CUCAMONGA, Calif. (12/13/07)--Twenty-six million credit union cardholders will now have access to surcharge-free ATMs at 341 Costco locations in 35 states. CO-OP Financial Services, which operates the CO-OP Network and its 25,000 surcharge-free ATMs, recently signed an agreement with Costco, a wholesale warehouse chain, to give cardholders increased ATM access (ATMmarketplace.com Dec. 11). More than 80% of CO-OP Network transactions are conducted at credit union ATMs. Members have asked CO-OP to form partnerships with retail chains, according to Stan Hollen, CO-OP president/CEO. CO-OP also has signed a similar agreement with 7-Eleven, which allows credit union cardholders to access their accounts at ATMs in 5,500 7-Eleven stores nationwide. Costco, based in Issaquah, Wash., has 383 warehouses in the U.S.