Not sure if its only available for Verizon customers or not, but from the T&C for the $5 iTunes card, it says for residents of USA (we can bypass this via VPN), so im assuming anyone can grab one. There are ~ 70k iTunes GC's for grabs.
Open to legal residents of the 50 U.S. (including D.C.), 18 years old or older. Offer ends 11/25/15 at 11:59 p.m. ET or when seventy-four thousand forty-two (74,042) participants register, whichever comes first. For complete Terms and Conditions and complete details, visit www.apple.com/legal/itunes/us/gifts.html.
The apps/eBooks would be available for everyone via a unique Amazon Link.
Starts 25/11 4pm Aus Eastern time.
cant wait ec.