What will be an average cost to repair an exhaust manifold leak? on 1998 Mercury Mountaineer

I have a 1998 Mercury Mountaineer with an exhaust manifold leak.

2 answers
Is the manifold cracked or is it a gasket leaking and if a gasket , what location?
if it has a crack in it then any local wrecking yard for cars ,ya get it for around $20 if a gasket problem then anywhere from $12 to $35 at any car parts store