[Eliot Ness]

Murf, I also use cloth covered wire from Radio Daze, both solid and stranded (there is an application for both types), but I suspect RD is the supplier you are referring to with high shipping.

I also have some old wire bundles from a friend that has a lot of cloth covered wire inside, and some modern vinyl (or rubber or plastic) covered wire bundles I got from another friend.  

As mentioned by Jcassity you can harvest a lot of wire from an automotive harness if you have access to a scrap yard.  It can be messy removing one but there is a lot of wire, although that might be a task for warmer weather