battery cables

Radnor (Airgas - RAD64059550 - RADNOR® 2/0 Red Welding Cable 250' Reel) sells Red welding cable for $4.60 a foot. My local welding shop sells off a spool (that runs $1150 for a 250 ft spool) by the foot at $5.00. Make your own, if you can find a shop that sells by the cable by the foot. Or get together with a bunch of guys on this site and buy a spool together. Cable is 2/0 gauge. Butane heated, dipped in lead or solder.
(SIDE NOTE:I ran 2/0 Red and Black under my diesel truck ((Diesels have 2 batteries, so I got juice)) to the rear bumper. Made a mounting plate and mounted welding Female Dens plugs for power to the wench (Male Dens plugs) on my trailer. Works like a charm.)