According to Angela Rittgers, vice president of marketing for Sprint Prepaid at U.S. mobile operator Sprint, Sprint prepaid rolling data will be available on Sprint prepaid monthly plans and will not expire. Sprint now offers up to 30 GB of rollover data with three of its prepaid plans, which can be purchased at Best Buy. All three plans, which are called Monthly Rolling Data, have unlimited voice and SMS and include either 1 GB, 3 GB or 6 GB of data and cost US $35.00, US $45.00, and US $55.00, respectively. There is no expiration date, as the data will roll over indefinitely as long as the subscriber stays below the 30 GB cap. Sprint indicated that this offer will only be available for a limited time but did not say when it would expire.