It is hard to give a price out because we all live in different areas. I would just type muffler shop in google and start calling different shops. If I had to put a price on just the labor of putting in a new muffler I would say 50-75 bucks.
Yea iv heard other people say the same thing about them, and it makes me think twice about getting glasspacks. But flomasters arent cheap, if i could find a good muffler for cheap i wouldnt mind using it, your sig says you a have a thrush on your 4.8, how do you like it on there?Glasspacks have an ok sound at first but the thing you have to worry about is that the packing will wear out and you get a ****tier sound out of it later on. My friend got one and he was all excited and now it sound like ****. lol you can get a nice muffler and do some cutting and welding and have it in for what ever the price of the muffler is. that is only if you know how to cut and weld. I thought i could and ending up taking a 25 muffler to a muffler shop and it costed me 175 to put the sucker on.