very expensive, but not among the expensive two.
3D Studio Max £2,695 ($3,495)
Lightwave - £995 ($1,595)
You might wanna settle with TrueSpace, GameSpace, Carrara or Aist, or even the free but powerful (although very confusing GUI for most modellers making the switch, use the tutorials and you'll understand it in no time)
and 3D studio Max isn't the most expensive, Maya Unlimited is £4,899 and Houdini Master is £8,769, the program used to animate Lord of the rings was Endorphin £7,995, and it only animates, looked at tutorial for it, looks like an amazing program.
As you can see, pro CG animation can be very expensive, don't expect powerful things to be cheap as Milkshape, its a harsh truth ironically a year a go I was surfing around looking at 3DS max and Lightwave and Cinema 4D thinking, wow I want them they cool, can't be any more expensive than photoshop, then eventually found the prices, I thought bugger