I got it for AU$20. As cheap as chips! Best money I ever spent on a game/sim.
There is something to be said for waiting to get a PC in your thirties. All the good but older games are very cheap (platinum or whatever), most likely excellent mods are complete and patches are finalized.
I was a Rome Total War + mods junkie for 18 months....until I picked up SHIII and discovered GWX. I haven't played RTW since