The Developer Edition version of the Moto X has already been discounted. You can now grab the device for $549 instead of its previous price of $649. Of course, the Dev Edition of this phone has an unlocked bootloader so it makes for a great tinker/modding device. You can get either a GSM or a CDMA (Verizon) version of the device. Here are some source links below if you are interested.

Source: Moto X Dev Edition GSM Version (AT&T and T-Mobile) and Moto X Dev Edition CDMA Version (Verizon)