Join Date: Feb 2000
Location: Bowling Green, KY
About $1/ft is average. There are places around here that sell it for more and less.
To attach the ends, I used a really cool method that I read about on here a long time ago. Basically you buy a big spool of solder, copper lug ends of the right size for your cable, and a propane torch. Strip the insulation back off the cable, test fitting it in the lug to see when you have stripped enough. Put the lug in a vise with the opening facing up like a cup. Your goal here is to fill the "cup" of the lug with melted solder. Unravel a bunch of solder off the spool and heat the lug with the torch. When the lug is hot, keep the torch on it and feed in the solder. The solder will melt as you feed it in, so just stop when the lug is nearly full of solder. Finally, jam the stripped end of the cable into the melted solder, position it the way you want it, and take the torch off the lug when you're done. After it cools a little, you can wrap a little electrical tape around the cable/lug joint or put some heat-shrink tubing over it (what I did). The lug will be very secure when you are done... the only thing that will get it off is holding a torch to it until the solder melts. Just be careful when you are jamming the cable into the melted solder, because the excess melted solder will spill out the side and it is very hot. When you've done a couple lugs, you'll start to figure out just how far to fill them so they don't spill over so much.
Good luck, it's pretty easy.