5 years ago I had the muffler and exhaust pipe replaced at Monro. The muffler had a lifetime warranty on parts and labor (warranty code 10).I currently need both replaced again. I got an estimate at Monro 6/29/11.The first estimate was 379.00 which included the muffler and a 39.00 dollar shop supply fee.(I guess for clamps).When I told the service manager that I had a lifetime warranty on the muffler, he crumbled up the first estimate and redid a new one which was 277.00.The new estimate was: Descrirp. WARR LIST NET LABOR AMT MUFFLER 20 212.99 FREE 46.00 46.00 EHHAUST PIPE 40 266.99 266.99 0.00 266.99 DISCOU(ON EXH.PIP)0.00 66.75 0.00 -66.75 EXHAUST SUPPORT 40 19.99 19.99 24.99 44.98 EX DISCOUNT -22.02 -7.10 -29.12 TOTAL EXHAUST 262.10 SALES TAX 15.73 The difference was 102.00. On the "first" estimate I only took note of the total, muffler,and shop supply fee.I didn't notice the discounts or the price of the exhaust,labor, etc.But it seems like even if the muffler was discounted in the "first" estimate the second estimate should be about 70.00 to 90.00 lesser.Also theres no shop supply fee in the second estimate. When I inquired he said this is the correct estimate and you still have to pay labor on the muffler.My first thought was he just upped the price on the exhaust pipe when I disclosed I had a lifetime warranty on the muffler which he could not find.I was just going to let the "free" muffler go and go someplace else even if the price is the same or a little more because of the difference in the 2 estimates.Thanks for any help.