That price seems good. $320 per muffler, add in stubs, shrouds, and outlets and you're up to about $1000 for a complete exhaust system. That's about what I remember them costing about a decade ago.
$1000
I wish. My IA told me the clamps were made of gold. I guess he wasn't kidding or I wasn't paying attention.
Kirk, sit down. Take a deep breath.....
Look at the attached snip from the parts manual, and the current prices on Cessna dealer website.
Additionally, the shrouds are-
R/H side $1154.00
L/H side $770.00
Good GAWD, a pair of those clamps that hold the stub pipes are $505, and you need two sets.