This is a nice way for me to do this; sure I could go on Nintendo's website and spend the same amount of money, but by buying on Amazon I also get the rewards for doing so.

it is much faster, easy, accesible this way.

A very good way to add funds easy and faster.

Anyone know a cheaper way to do this

This is a great gift (or a great way to convert Amazon credit directly into Nintendo eShop credit)

This was a great way to earn rewards points.

The best way of purchasing Nintendo Credit

You can get them in the store but since I shop online (mostly) it was a convenient way to purchase these without having to leave my house.

He asked for the actual game disc of a certain game and after 3 attempts of trying the disc, we found that the best way to play this game was to download it

Best way to purchase games in the eshop

This is an easy way to buy stuff on Nintendo eShop rather than putting in my credit card.

These eShop cards always work great for my 3DS/Wii U, no issues redeeming as of 2016/2017, but hopefully they get continued support as the Switch is now out.