the more you buy the more you save
. savings start at 30% for one game, and go all the way up to 65% off if you buy all of them. they also take into account if you already own one or more of the games through GOG.
personally the only two I don't own are Demon Stone and Dragonshard, and I doubt I'll be grabbing either. great deal if you're looking to build up your collection though.