How much is a muffler?
Varies from car to car. Is it just the muffler or are the pipes a problem? Find out where the noise is coming from, check for holes, black soot or just air coming out. Be careful, it might be hot, expecially the converter & front pipe sections.
The muffler doesn't have much to do with emissions. Some jurisdictions prohibit glass packs for noise reasons, but the exhaust going into the muffler is pretty much chemically identical to that going out. If a vehicle doesn't pass the emissions test with a glass pack muffler, it almost certainly wouldn't have passed with any other type of muffler either.
I paid a total of 580 Canadian dollars. They had to do some complicated cutting and installing when attaching the muffler. The muffler cost just over 300, but tax, labor and an extra part really killed my wallet. A muffler with a hole in it will usually cost you lots in gas and you can fail your emissions test. An awful expense when it comes to older cars.