I don't think there are any cheaper options. I paid as much for the control cables as what i did for a new head unit. Since there's such a small market for these controls there aren't many options and they can basically charge whatever they want.
Current bikes in the stable:
2009 Street Glide
- 107ci, stage III heads, D&D Fatcat exhaust, Andrews 54 cam, TTS, 108hp 122tq
2003 Heritage Softail Classic
- 95ci, stage III heads, RB LSR exhaust, S&S 510 cams, 100hp 102tq