People looking for the best cell phone plans have discovered a trick long embraced by shoppers at Costco, Sam's Club or any one of a number of big box stores — sometimes, it pays to buy in bulk. Only in this case, people aren't buying an industrial-sized jar of mayonnaise or a palette stacked with canned beans — instead, they're buying up a year's supply of wireless coverage by paying for their cell phone service in advance. And phone carriers are only too happy to oblige them.
Typically, cell phone bills are a monthly affair. You use your wireless service, and at the end of the month a bill shows up telling you what you owe. Even with prepaid phone plans, where you pay for service ahead of time, the default approach is to go month-to-month with your bill paying.
