Any suggestion on local sources for the welding cable? I know that a welding supply store sounds like the obvious answer, but I've checked 2 of them near me and neither had any bulk cable. I could buy a grounding cable and cannibalize it, but that proved to be pretty expensive.

If looks like Advanced has #4 and #2 battery cables in up to 6 ft lengths with a battery terminal on one end and a ring terminal on the other end for about $16. A similiar sized "starter" cable with ring terminal on both ends for the return run is about $9. This seems like a pretty cheap alternative and kinda like the easy button. Any thoughts?