Nintendo has really been pushing the digital distribution of their games on the Nintendo eShop, especially since the release of the Wii U.  One way to load funds onto your 3DS or Wii U is to buy prepaid eShop cards in a store and then use the codes on the card to fill up your virtual wallet with credit to use on the digital games eShop.

Best Buy is now running a sale on Nintendo eShop Prepaid Cards.  Between now and December 13th eShop cards are 20% off both online and in store!  So Nintendo gamers everywhere can load up their virtual wallets with eShop credit for less!  This is bound to be a very popular sale so it would be wise to pick up some eShop cards from Best Buy before they run out!