I know they don't have "national" prices, but the poster mentioned BB and CC in his post so I assumed both retailers were located in the same area with Wal-Mart which would've dictated Wal-Mart having a price either at $15.99 or slightly lower at $15.87 to compete with the other two retailers pricing. Also, I should have added the caveat about competitive pricing located in the same area around different parts of the country.
Crawdaddy