We already know that the Moto X is available on AT&T and Verizon. Now we know that the Moto X is available on Sprint and U.S. Cellular. The Moto X can be bought on these two carriers now for $199.99 with a two-year contract. New customers that switch their phone number to Sprint can get an additional $100 off. U.S. Cellular is selling the phone for $199.99 (with a contract) along with a $75 rebate for new customers.