Best Buy is offering 20 percent off its entire range of iTunes gift cards in a one-day online deal. The cards are available in $15, $25, $50, and $100 denominations, which now range between $12 and $80 in price, with the retailer also providing an integrated pack of three $10 cards. While 20 percent reductions certainly aren't unprecedented — as 9to5Mac points out, Walmart offers a similar deal on email-redeemable $50 cards — it's rare to see such a comprehensive offer, extending right down to the lower end of the spectrum.

The cards are valid for all forms of Apple content, including music, movies, iBooks, and apps, and can be purchased from the Best Buy site. While regular orders will not be delivered in time for Christmas, site-to-store requests will reportedly be fulfilled until 3PM local time on December 24th, though it is not clear whether the 20 percent price cut, a "Deal of the Day," will still be in effect at that point.