I would give 5 stars for the value, I looked at many other options including buying uni strut and mounting my panels on the roof of my contacts container.
I would give three stars for the instructions, they need updating! My instructions showed a boat going through the bottom of the leg through the foot, apparently the design has changed and now it is two smaller boats going through the back of the leg into the foot.
Another issue I had is that the socket head cap screws to mount the panels to the rails were too short for my panels, the socket head cap screws included in the kit we're only good for a panel thickness of 38 mm. My panels are 43 mm in thickness so I had to go buy longer socket head cap screws to attach my panels to the rails.
I used 16-in by 16 in X 4-in thickness concrete blocks I found at Lowe's to Anchor the rails down. These blocks weigh 66 lb a piece. I drilled them and installed the concrete anchors and they work like a charm. I would post some pictures but I can't figure out how to do it.