For $150 off you need to sign up to receive one time coupon. See more info in the comments
This coming Monday Motorola is running a promotion for their popular Moto X phone. What you get is $150 off the list price of the phone plus a coupon code to get 30% off accessories. The sale only works on the unlocked version that you order via Moto Maker (the online customization software). The list price of the base model is $499.99 so the price will be $349.99 after discount.