Sarah Palin's Book A Best-Seller, Or Just A Book People Are Buying Because Of Dirt Cheap Prices?

Media Matters writes a great piece on Sarah Palin's inflated book sales. Take a look at the introduction:

"Sarah Palin's memoir Going Rogue: An American Life has garnered attention in part because of the number of copies sold before publication. But the book has been offered at below-cost prices from major online retailers, and Newsmax has used the book as a loss leader to promote its magazine, potentially inflating the book's sales."