How much should replacing rotted baffles in my muffler cost. Muffler is 10 yrs

What is your question?

My 95 delsol makes a throaty exhaust noise when i first accelerate-has been happening for a few weeks now. A shop I took it to says I have rotted baffles and said it would cost $400 to replace. Is this a fair price? No leaks found otherwise.

How long has your 1995 Honda Civic del Sol had this problem?

A few weeks