ummm, the ad for the store in amherst on maple says WD up to 50% off.
Now whether they carry any or not is a different story.
Linky (look on the last page bottom right): http://officemax.shoplocal.com/officemax/default.aspx?action=entry&pretailerid=-99861&siteid=412&adref=officemax&BV_UseBVCookie=yes&storeID=2420351