EA Origin has PC Digital Download: Tomb Raider for $24.99 or Tomb Raider Survival Edition for $28.99
Steamworks title
Tomb Raider $24.99
http://store.origin.com/store/ea/en_US/DisplayProductDetailsPage/productID.273547900
Tomb Raider Survival Edition $28.99
http://store.origin.com/store/ea/en_US/DisplayProductDetailsPage/productID.273547700
Steamworks title
Tomb Raider $24.99
http://store.origin.com/store/ea/en_US/DisplayProductDetailsPage/productID.273547900
Tomb Raider Survival Edition $28.99
http://store.origin.com/store/ea/en_US/DisplayProductDetailsPage/productID.273547700