If your credit union is staring at an upgrade quote for aging ATMs, it's worth running the math before you sign — because in a lot of cases, the upgrade costs more than simply replacing the machine. Upgrade or Replace? The Real Cost of Keeping an Aging ATM Running If your credit union is staring at an upgrade quote for aging ATMs, it's worth running the math before you sign — because in a lot of cases, the upgrade costs more than simply replacing the machine. The instinct is