"Amazon Cash is the fast, no fee way to add cash to your Amazon Balance and is currently available at thousands of stores including GameStop, CVS Pharmacy, KwikTrip, Fred's Pharmacy, Cumberland Farms, and more.
Try Amazon Cash for the first time by adding $25 or more to your Amazon Balance and earn a $5 Amazon Credit towards your next purchase on Amazon.com. Your discount will automatically be applied at checkout. This is a limited time offer, one per Amazon customer account. The promotional credit expires on January 31, 2018."
This is for first time users