Scroll to the bottom of the page to receive a $2 Amazon Prime credit that you can redeem on Prime Day.
There are a limited number of credits available each day, but the page resets at 0:00 UTC daily, so 5PM PST.
So credits become available again each day starting at 0:00 UTC/5PM PST.
QA Note: This is a daily offer, through July 13th. Each day only 3,125 $2 credits will be available. So if you miss it on one day, try again the next day at 5pm PST.