Exhaaust leak 2001 s80

[mikegiani]

I have an exhaust leak from hitting a tree branch in road. I brought it to mechanic and he said that I need a new front exhaust pipe with built in cat converter which he said was 1200 dollars! and a new ox senser for 400 dollars! Im a college student and cant afford that I have seen my gas mileage go way down. Is there a cheaper way to fix this? Thanks