This deal was expired before due to the gift card being out of stock, but now it is available again. I just purchased 3 gift card for $48! This is a great deal for any Nintendo owners as Nintendo rarely sells their game at the sales price. See below for detail.
Walmart.com via Google Express has $20 Nintendo eShop Gift Card for $16 when you follow the instructions below. Shipping is free.
1. Download/install Google Express App (iOS [apple.com]
or Android [google.com]
2. Search for "Nintendo eShop gift card" in the app and add 1-4 x of the $20 Nintendo eShop Gift Card sold by Walmart to your cart.
3. Apply promo code APP20OFF during checkout (more info
4. Price will be $16-74 + Free Shipping
Note: You must check out with the Google Express App in order to apply and use the promo code.