Disney cast members have the #purplewall in Magic Kingdom

Don’t know if I’m just a dumb, but I cannot figure out how to get to the “Aukey 3300mAh Aluminum Alloy Portable External Battery” for the $5 price. The prices on Amazon are 50, 30, and 35 and there’s no code listed...

Don’t know if I’m just a dumb, but I cannot figure out how to get to the “Aukey 3300mAh Aluminum Alloy Portable…