you have got to be kidding me!! are the O2 sensors at the cat front and back that expensive??
$50 to $75 ???
advanced auto prices
was thinking of doing some preventive maint and just replace them, just for the heck of it and after seeing that price, no way

 

I got NTK O2's from Amazon for $37 & $38 each.

You could try Rock Auto.

 

^Yeah, that.

I got out on Amazon with a cat an front O2 for like 160.

 

also, new in box from ebay for 35-45.
Advance has some very good discounts for buy online - pickup in store.
google it.

ES123
A124
HUGE30

 

Yup, sucks I know. I've always payed around $60 for them on previous cars. You can get online and shop around to get a better price, but then you have to pay for shipping and the wait.

 

i was very shocked to see that high of price. its not that i need them, just thinking about changing them out. cant hurt