Walgreens recently began including advertisements for its store brand on its Web site, running ads in weekly flyers, and promoting its store brand products (such as Wal-zyr, the Zyrtec alternative) on endcaps in stores. How might this affect Walgreens's relationship with manufacturer's brand suppliers? Do you think this increases the cost of the store brand items? Why or why not? If you were in control, would you use this advertising strategy?