That's pretty steep especially if it's not including the muff man.
Go get another quote... Take it to a few different places and tell them what you want and what other places are charging..
Find out if they're going all new tubing from the cat back and see if you can throw out a few extra bucks to have them remove that last cat... the 2nd one after the y pipe, it's useless and robs mpg, hp and db. Some places MIGHT do it, depending on how much you spend with them, who you know, and why you want it gone.
FXEdgeplorer Level II
Part 01, 02, 03, and 06
Tall, Slow, Shiny, Loud
6 Lug Ranger
D44 SAS'd on 12" of lift and 37's...