Motorola Moto X is on sale at Republic Wireless these days. The 2013 model is only available for Republic buyers at the special price of $349.99, unlike other US carriers that sell the device at the same price of around $400.
The Moto X on sale at Amazon works on most GSM carriers such as AT & T or T Mobile. The price is available for 16 GB device in white or black, whereas the 32 GB device sells at $400. This means you will save around $50 for each model.