So I went to a muffler shop and for 2.5" from the cat they wanted 200 bucks, that seems a bit high

 

yea it is kinda high...
try a different shop, but idk some shops will charge up the *** cus its a tight place to get to the downpipe and then the new flexi-tube thing will cost you some money as well....
but yea just shop around see if you can get a better price...