All depends on the area and the connections u have. Someone might get 40 for a cat cov and u might get 80 for the same one from the same person. Its good to have some good connections in this business. I have a guy that is from around here that only buys stuff that has a core on it, like converters, alum wheels, rotors starters and alternators, break calibers etc. He pays more than the scrap yard ever thought about paying. For example the local yard gives 6 dollars for an average battery (about 35 lbs). He gives 12. Get ur name out there and get a GREAT reputation. That will help more than anything