Surprised its being going on for a couple days now and no-one mentions, but you can get the Total War Mega Pack on steam for $20.39 til 10am IIRC PST monday morning. It includes Rome-Gold, Rome-Alexander, Medieval II, Kingdoms, and Empire. Each game is also on sale individually so if you just want one or two you don't need to buy the whole pack (the Rome complete pack is 3.39, Medieval II gold is 10.17, and Empire 10.19)

I'm looking into it (probably should just buy it, but want to make sure it interest me enough), but it seems like a killer deal