Anywhere from 100-700 depending on mileage and drivetrain config(4x4 or 2wd) and just like with everything else, prices very GREATLY from yard to yard..
Best thing to do is go onto www.car-part.com
and see what yards in your area are asking for exactly what you've got(01 3.0 2wd? 4wd?).
They're not worth alot of money really....they're junk transmissions... Having gone through 3 in my truck.