The cost of the plan is determined by....

The cost of a plan is typically determined by the features and services included. Some of the factors that can affect the cost of a plan are the amount of data and voice minutes provided, the size of the device and its capabilities, the type of coverage (local, national, or international), and any add-on features that may be included with the plan. Additionally, some plans may charge an additional fee for extra services or features, such as insurance, device protection, and international roaming.