i had to take my 1991 jeep cheroke in to get a new muffler put on it. when the guy pulled the muffler, i think he hit the catylitic converter, damaging it slightly. then he came out of the shop and said "you need a new cat cause yours is going out" i told him i wanted to look at it before i did anything. i went out there and sure enough. there was a ding in the mesh about the size of his cutting torch!! i didnt say anything, but just asked him how much a new cat would cost. he replyed "give me a sec, i need to look it up" when he came back he told me the price for the one i "need" is 350 plus labor!!! i said, "oh really?" he then said that he could put in a cheaper one, but it wouldent work as well, and i asked him how much that would run. he told me "hold on, i have to look this one up too." when he came back this time he said, "this one is only 250" i then asked if that was labor inclusive, he replied no. i told him to just leave it and put on the new muffler (it was under warranty , so i went to this place instead of my normal shop)
about a week later, sure enough the cat fails and i have to take it in again. i thought maybe it had just started going out, but noooo. when i took it to my normal shop, they pulled everythign apart and told me that i the cat liquified and ruined the muffler. i said "that sucks, what does it cost to fix everything?" they relpied "180, and that includes labor" and that was for the one i "needed" according to the other guy. i asked the shop i was at and they said it doesn't really matter that much.
needless to say, i will never go to midas again, even though i used to get free mufflers under warranty.