This album is only available at Wal-Mart. I guess Amazon put this page up for resellers. As for iTunes, it is now available. I was suprised not to see this on the site earlier since other Wal-Mart exclusives such as the Eagles "Long Road Out of Eden" are on iTunes as well as available at Wal-Mart.
Yeah, the other poster is right. It's not discontinued, it's just a Walmart exclusive. (And only $8.) It was released basically just to help promote her clothing line, which is also only available at Walmart. (btw, this info is all on wikipedia, if you have a similar question in the future.)
Edit: Oh, I just noticed the mp3 album is on Amazon now, for $5.99, so.. I guess it's not exclusive anymore. :P I prefer to buy CDs for artists I really like, though.