This is from another thread but it will get buried shortly since that thread is about shipping times:
http://www.motorola.com/us/consumers/about-motorola-us/About_Motorola-Legal-Terms_of_Sale/About_Motorola-Legal-Terms_of_Sale.html
So it seems to me the Dev Eds should have a 30 day return period as should any Moto X not made with moto maker.
motorola said:RETURNS
Physical products can be returned for a refund within 30 days valid for phones, Motorola branded accessories and 3rd party accessories if they’re unopened and undamaged. If you purchase a Moto G from Motorola, you have 14 days from date of delivery to return it. California residents have up to 30 days to return their Moto G. Follow the instructions in the box, or call us at 1-800-734-5870 and let us know you’re returning something.
Moto G Remorse Policy - 100% refund for undamaged phones up to 14 days from date of delivery. Residents in the state of California have up to 30 days from date of delivery to return the device.
For Moto X devices designed with Moto Maker: Let’s say you do all of your designing, get your Moto X, and then decide you have a different favorite color. You can re-design once if you return the first one within 14 days of date of delivery (30 days in California), no questions asked.
You pay the shipping for the return, and you’ll be credited for the price of the product but not for the shipping you paid to receive it. And we are not charging for shipping your Moto Maker devices.
http://www.motorola.com/us/consumers/about-motorola-us/About_Motorola-Legal-Terms_of_Sale/About_Motorola-Legal-Terms_of_Sale.html
So it seems to me the Dev Eds should have a 30 day return period as should any Moto X not made with moto maker.