You can't imagine what a broad question you asked. What is the leak and what do you have?
Depends entirely where the leak is coming from.
depends on where the oil leak is at
We are going to need to know where the source of the leak is to help you with that question.
An oil leak problem probably is the sign of a problem in your oil pressure or it could simply be a slow leak. The problem can cost anywhere from $100.00 to $400.00 for an oil pressure problem.
Depends on where the leak is and how much you are willing to spend. Best thing is to take it to a reputable shop and get a written estimate on what needs to be fixed.
depending on where the oil is leaking from. sump gasket? rocker cover gasket? hoses? castings?
We need to know the source of the oil leak to give you any kind of answer.
It depends on where the leak is and what is causing the leak.
155 for barnad new oil pan and possibly 2 hr labour that will 160 all cost you lookin at 350
It depends on where the leak is coming from. If it is a valve cover gasket it could be less than $100. If it is a rear main seal it could cost close to $700.
Depends on where it is leaking.