I paid $35 for this on sale, considering the price paid this product is ok.
I am using it with two Dell 27" monitors, they are 4.7KG so well within the 8kg limit listed. If you want to use it for anything heavier, I would strongly recommend against it. 4.5 - 5kg is the max for this stand I believe.
the good: Quick and easy to assemble. The clamp fastening the stand to the desk is big and seems solid. Nothing moves. Cable management while a bit plasticly do the job well too.
The bad: the joints for tilting and moving the monitors are impossible to keep tight. I have fastened the monitors in one spot and that works for me since I dont intent to move them much. I got the stand just so I have more space on my desk. I tried adjusting the tilt of the monitors a few times, and each time the joins loosened and then the monitor slowly drooped down over time. I fasted them again with an allen key and its fine. Just don't move it.
Fine for a home office setup. You get what you paid for and this is on the cheap end for a dual monitor mount.