Where Can I Find iTunes & App Store Gift Card Sales?
Every few months or so, Best Buy (which rarely has the lowest price on anything) will have a brief 15-20% off sale for iTunes & App Store Gift Cards. But these sales are tough to predict.
One alternative is to use a service like Plastic Jungle. Plastic Jungle buys unwanted gift cards from individuals and then sells them at a discounted rate. It's a great way to save on gift cards, whether you're looking for iTunes, your favorite restaurant, or a clothing store!
Of course, if you're in a rush and need a quick gift, you can always buy electronic gift cards straight from the App Store.