Price of copper is up nicely today, you may have to pay a bit extra next load. I buy wire from my job, we build and re-build industrial equipment. I love the rebuild wire because it has a lot of #2/#4 AWG wire. I pay a multiplyer on the copper spot price from previous day, might want to figure something like that out so you don't have to spend a lot of time coming up with a price out of thin air. I pay .24 spot price, so at 2.75 I pay 66c per pound etc... Good luck and may the copper keep flowing!