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.

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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