First of all, the concept - to use the circular hole in the stand of the iMac as a detent, without restricting a possible cable management thus a very clever idea ... as long as nobody gets the idea to disassemble the iMac at the hinge of the stand.
Both the polished dome and the safety cable to make a high-quality impression. Frankly, the sight of the finger-thick cable is likely to deter most "prospective" already. The assembly is also very simple.
Overall, an expensive, but also successful product that has earned its last star when it was able to demonstrate the fulfillment of its purpose.