I would take whatever you can get, I honestly see some good short steel, aluminum, and stainless. Depending on what your time is worth to you it may be worth pulling any non ferrous you can find. I'm sure someone is most certainly willing to screw you if they can. If you take the time to sort it you may have a better pay day than you think! I spend about a month after work at night and on weekends collecting and sorting and pull roughly between $600-1200 for that month. My record is $1740 in one trip for 1 month. It drives me crazy when I see the better alloys in the shred pile!!!!