The card terminal at the "pay at the pump" stations checks if your IBC Bank Visa Cash Card has enough funds left to pay for an "average purchase of gas". If your cash card does not have enough money to pay for an average amount, your attempt to pay at the pump will be declined. The average gas purchase amount changes just as retail gas prices change. This check is in place to prevent people from spending more than the balance left on the cash card. We recommend that you prepay the dollar amount of gas you want to purchase to the cashier.