Did some checking on this product. Helps secure big power cord connections to the AC outlet which tends to sag due to diameter and weight. Cost $350.
I had this issue with my Shunyata PC's. I placed some stiff packing foam (2" X 2" X height + 1/4" or so) between the shelf and the bottom of the power cord and "wedged" it in the gap to create a very firm / robust (no sag) connection. Doesn't look pretty but its behind all the gear and you can't see it unless you look around the back of the rack.
Cost $0.00. Just save some foam scraps from other electronic gear.
My friend wanted to support the power cable which was high on his desk so he added a whole bunch of extension shafts for his NCF Signal booster haha.
The booster piece in the middle of the tower is for structural support as the legs get wobbly from the extreme height