http://www.gogamer.com/cgi-bin/GoGam.../View/001SPEFP (search for spellforce)
It's the original Spellforce and the two expansion packs (including the hard-to-find Breath of Winter expansion)
Both the expansions sell for about 30 clams, but this pack is all three excellent games for only $20!
If you haven't played a Spellforce game, you need to. It's a great cross-genre RPG/RTS game.