Copper rather than PEX? Have you priced copper lately??? I was low on Romex wire for a project around the house, as I finished-off a 500' spool that I bought about 10 years ago when I built the addition. I picked-up a 25' coil of 12/2wG, and it cost me better than $35!!!! I used to be able to buy 250' for that!!!!
2014 RAM 2500 Laramie 4x4 Quad Cab w/Cummins Turbo Diesel, 2009 Rockwood 2607, and 3 'yaks!
300W of Suntech Solar, a Rogue MPT-3024 Controller, and a Xantrex PW2000 Inverter