I replaced mine from the Header back for about $1200 CDN - All Stainless steel, with larger piping, 1 aftermarket high flow cat and 2 very good quality resonators, with a tip. I'm sure this would be in the $600-$900 range with stock components (depending on whether this is dealer of course, which would change that price dramatically). Try going to a shop that specializes in exhausts only - they tend to be much cheaper in my experience.

IIRC, I replaced the exhaust pipe/muffler on my 854T and it cost around $280, with new hanger and pipe extension at the dealer parts dept. Cat converters go for around $250-275, plus gaskets. The dealer is also probably going to install 2 O2 sensors while the converter is off the car. Still, a lot for easy labor.
If you DIY, the car needs to be at least 2ft off the ground to get the tailpipe replaced, it is all one piece.

Klaus
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(V♂LV♂s 1995 854T, 1998 V70R)

Just replaced mine for $700 plus labor for Walker brand (Life time warranty) at the local Indi Shop in WI. Part of my 93's rear main seal work at 93,000 miles. Total bill was $2800. Complete exhaust, new radiator and heater hoses, new seal front and rear on motor. New Water pump, tensioner, tensioner pulley, timing belt serpintine belt and serp belt tensioner. New injector seals and new Sway bar bushings.