What is the average cost for a new starter on a 1992 Pontiac Bonneville?

I need a new starter for my 1992 Pontiac Bonneville. How much would the average cost be? No labor cost because it's being put in by a friend of mine for free. Just the cost of the starter.
I feel the need to add details to my question due to a rude response from a yahoo member. This IS a Q & A website and please have respect when answering questions. I don't know anything about car part costs, money is an issue because of my current job, and no...this question is not being posted from a Smartphone.