I've done YYZ-SIN and YYZ-HKG runs on DL that were in the $450 - $550 USD price range, so this price is not all that great. As others have noted, C+ is not a PE cabin and does not have a class of service bonus on DL. Although I believe if you credit to VS, they give all 'W' fares (even C+ ones) a 50% bonus.