An independent bookstore, like Tattered Cover or Square Books.
A chain bookstore, like Barnes & Noble or Borders.
An ebookstore, like Amazon or BN.com or Borders.com
A mass retailer, like Wal-Mart or Target.
A supermarket, like Kroger or Safeway.
A club, like Costco or BJs or Sam's.
An airport store, like WH Smith or Simply Books.
A drugstore, like Walgreen or Rite Aid.