Books can be marketed through a number of channels. Right now, the top three places to sell books are:

Ecommerce, which moved 43.8% of the copies in 11 months of 2012. This was up nearly 9% from the previous year’s figures.

Large chains (bookstores), which claimed 18.7% of the market that same period, down 10% through all of 2011.

The general “all other channels” category moved 15.2%, up half a percent from the previous year.

Removing the general category from the mix, the single channel that came in third was mass merchants (Costco, Walmart, etc.) with 7.7% of the sales.