Kaplan PC's at Tweekgeek.com are quite reasonable. 4' or less of the non-filtered cords are $299 at the present, $349 for 6'. Terminations are either copper or rhodium. I have 2 of the filtered rhodiums for my amps and will be testing both the rhodium and copper non-filtered on my preamp and my Modwright Transporter.
Good Luck.
Good Luck.