Amazon PRIME Deal: $25 Amazon Gift Card + Get $5 Credit

Amazon is offering Prime Members a $5 Amazon credit when you purchase a $25 Amazon Gift Card and use code GCPRIME18 at checkout.
After you enter the promo code you should see a message that says: 
Congratulations on your Prime Day gift card purchase. Your purchase qualifies you for an credit. A $5 promotional credit will be automatically applied to your account and emailed to you within two (2) days after shipping. 
You must be a Prime Member and buy a minimum of $25 in Amazon Gift cards.
There is a limit of one. Within two days of purchase, you will receive an email from Amazon that your credit has been added to your account and instructions on how to redeem it.