I have several plumbers that have contacted me about purchasing their copper piping and brass. One of the gentleman has around 400 lbs of pipe, most of it already clean of solder and paint (#1 pipe by me) and some of it too dirty (#2). Around my area, this plumber can get between 2.40-2.55 a lb for his piping. However, we know in our business that there are scrap yards that pay more than that. I have a yard that will pay 2.80-2.90 for #1 pipe and 2.60 for #2. My question is, what do I offer per lb for his copper for a profit? My thought is, I travel to his shop once a week or every two weeks, not out of my way at all since he is on my way home from work. This eliminates his need to load his truck, clean his own pipe, wait in line, waste fuel and time etc. What would you guys offer per lb and consider a reasonable profit? I have a scale, chop saw for cutting joints and plenty of buckets.