10% off Nintendo Eshop game cards

$20 card for $18, $10 for $9, etc. I just ordered a 50$ card for 45$, free shipping, so I pretty much got a future game for 5$ off. http://stores.ebay.com/officialbestbuy/_i.html?_nkw=nintendo+eshop&pub=5574654247&toolid=10001&campid=5337565260&customid=23igndd&mpre=http%3A%2F%2Fstores.ebay.com%2Fofficialbestbuy%2F_i.html