How much does it cost to install an exhaust system?

Hi
Im just wondering how much would it cost just to install a new exhaust system? I called 2 meineke shops and they both want to charge $100?! Im not sure if thats a good deal or not. Also i asked them how much it would cost to install a new air induction system and they said around 40-50. Im a little confused but i thought installing an exhaust system would be cheaper but i guess im wrong. So what do you guys think? Should I pay the $100, keep looking for a cheaper price, or should i just install it myself?

Thanks!

a local shop around me charges 125 to install the piping 2 3/4 inch all the way back which includes the piping idk if meineke does that

Cost me 225$ but thats with a magnaflow muffler included... but not really sure how much it actually cost to get it welded on

yeah i dont think 100 dollars is that much

will run me 300 from header to cat, and from cat back 2.5" sergical grade stainless steel all custom fabricated and minmal bends. Welded sections.

thats about right... i already had my catback and car-x put it on for me for 100. Thats with all the clamps and crap too though. I say pay the money, you'll get the warranty too.