Specialized only sells their tires through shops which also sell their bikes. If you don't live near a specialized dealer you could maybe try calling a few and seeing if they will ship the tires, but I wouldn't count on it. The only place to buy specialized tires online is the specialized website, but you will be paying MSRP and no less.
http://www.specialized.com/us/en/bc/...enuItemId=9304