[TowerTalk] Where to find Surplus wire for ground

[Rick Scott]

Ive been trying to find information on grounding my station that's mid house with no real ground close. So I must go through the wall and down into the crawlspace.  I was told by an electrical engineer ham that I need 2ga wire minimum.  Well trying to tell the wife I need 10 -15 feet of wire that's 4 bucks a foot at the local big box, didn't go over well.

Looking over the phone book I didn't find anyone that does surplus wire anymore (Copper prices I guess) .

Anyone know of a source?