cost to replace automatic transmission pump on 1990 Chrysler LeBaron

When the car sits for a period the transmission fluid leaks out. The problem is a in the transmission pump.

Asked by for the 1990 Chrysler LeBaron
thats rebuilding the trans. if you are putting in a pump, the rest should be done as well. have a trans shop check it for you to verify.
overhaul is about 1200. the pump alone is about 400 plus 8 hours in labor.