Update: Of note, you can claim a $2 Amazon MP3 Store Credit when you link your Twitter account. (Although Amazon says this promotion is expired, it's still offering credits.) It's valid with several of the above albums, which brings the price down to 99 cents if you haven't already used it. Deal ends July 28 at 2:59 am ET.
Channel 3 * by Channel 3, a similar product, is available at these stores