From 9to5Toys.com:

Best Buy takes 15% off all Apple iTunes Gift Cards. With free shipping, that’s the best deal we could find on these cards and the first time we’ve seen them discounted since June, when Target took 20% off in-store only. After the discount, a..

$15 gift card costs $12.75

$50 gift card costs $42.50

$100 gift card costs $85, among others (3 pack of $10 for $25).

They’re good for music, videos, iBooks and iOS/Mac app purchases.