wont jump or key start but will push start, could it be anything else?
how much to replace starter? on 1995 Mitsubishi Eclipse
Power needs to be checked at the starter to be sure. Here is a handy estimate guide from this web site which has it at $247-$383 range.
Make sure the car is in neutral with the hand brake applied, supply battery power directly to the starter solenoid wire at the starter and see if it engages and rotates engine if so stater is good!
Check the clutch switch, on the clutch pedal.
4000 AT PULL A PART