He sells welding wire on Ebay. I traded a few emails w/ him some time ago when I needed quite a bit of 2/0ga cable for a battery relocation. I also got prices from him for 1/0. At the time, he was around $1.40 per ft (this was about 6 months ago). Just tell him that you saw his add on Ebay and he will give you the Ebay prices. He will also send you free samples (about 2ft) of what ever size you want. He sent me 1/0ga, 2/0ga, 3/0ga and 4/0ga all at his cost for shipping. The wire is a good quality, very flexible and has an inner liner for protection. I believe if you buy 50ft or more, he will even print what ever you want on it for free. The only bad thing is that he has a set shipping fee of $20 or $25 for 10ft or 250ft, it does not matter but this may be negotiable.
i'd send you 20 tsunami silver 1gafor exactly what i paid, PM me if you want, just got delivered today but i ended up getting an entire kit from guy i bought my amp from and have no need