StarCraft now free

Released in 1998, StarCraft was one of the most successful and influential RTS ever and Blizzard has just made the original game, along with the Brood War expansion, for free (legally) for both PC and Mac.

The remastered version of the game is slated for release in a few months time so this is likely part of their marketing effort for the launch. I’m just wondering how much would the remastered version retail for?