Amazon is now selling Wii U and 3DS eShop credit codes with denominations of $10, $20, $35, and $50. These are the standard amounts we have seen for the eshop so far, but there is something else that is interesting. They are also including new codes such as $5, $45, and $70. Could this imply something big is changing for the way Nintendo handles the eshop accounts? We will have to wait and see. It is possible we may even see the $5, $45, and $70 as cards in the future.