There’s a pretty amazing sale currently available on GOG.
A lot of great classics from Ea can be purchased at a huge discount, and each purchase will get you The Witcher:Enhanced Edition for free!
Titles include classics such as all the Dungeon Keeper games, the Ultima saga, Syndicate, Wing Commander, Alpha Centauri and many more, most of them at 2.39$ each.
If you missed any of those games (blasphemy!), or want to try (for free!) the first chapter of The Witcher while waiting for the release of the 3rd one, this is a good opportunity to do so.