The usual suspects internationally are still what I'd class as expensive ($100 USD for 6 metres!). I haven't looked around much locally yet but hoping there's a cheap place. I have looked on Surplustronics' site.
I'm rebuilding my new CNC machine's electronics with a new motion controller, new proximity limit/home switches and a proper E-Stop circuit instead of the dodgy current one. I have most of the parts sorted but this is stumping me.
Cheers - N