Yeah good luck finding one for a decent price. I'm in the same boat. Going to rebuild mine.
As long as your gears inside are fine, you can get a rebuild kit (seals, bearings, syncros and gaskets) for a couple hundred bucks. Or just replace the parts that are bad if the damage is light which is what I'm doing.
http://www.jeep4x4center.com/jeep-trans ... x4-ax5.htm