Rare discount
Sure, getting 15% off a product or software package is great, but your discount's limited to that purchase choice. That's hardly the case with an iTunes gift card. If you're a Mac user, chances are good you'll eventually spend $100 in the Store on new OS X versions and various software packages...and most people have dipped into the iTunes music or video selection from time to time.
So why not pay $85 instead of $100 for your iTunes purchases?
The card is available for free shipping OR in-store pickup.