I took the stock exhaust pipes and catalytic converters to a scrap yard today. I only got $40 for the cats, and they said the pipes were essentially worthless in that small amount. At least they'll get recycled.

I feel like I got ripped off a bit, but I also didn't want to use more gas driving around to other scrap yards to price-shop. You can't just call around to get values of this stuff. they have to inspect the cats in person. Which means you need to cut the pipes off the catalytic converter section before you take them in so that they can actually visually inspect the catalyst material. A sawzall and an angle grinder got the job done for me.

Speaking of using gas, the best part of the trip was that I traveled 25 miles with less than a gallon of fuel. I reset my dashboard mpg reading before I left my house. When I parked at the scrap yard, it was at 28.0 mpg! It was some unusually gentle driving though, because I had the pipes in the back and didn't want them sliding around.