Originally Posted by Snir Golan
The thing is that if you don't need all the cables, its really not that expensive. A single pair of cords cost $40 and the straps (4 of them) cost $40. So for $120 you get 4 straps (2 for shoulder height and 2 for knee height), 1 pair of heavy cords and 1 pair of light corcords. I went with 15lbs and 7 lbs.
The cords at our box are mounted to our yoke, so you can just slide the set of cords to eye vs. knee height. If mounted in a home gym, just put two pairs of eye bolts in the wall, one at eye height, one at knee height, and just remove and re-clip as needed.