Purchased this add-on as I already had a Rogue rack and this gave me a selectorized lat pulldown, low row, and two functional trainer trollies. Functionally it is everything you could possibly need and works perfectly.
Assembly for me was a bit tougher than average because I was adding two posts to my rack before the trainer parts went on and working with literally inches to spare between my walls, pillars, and HVAC ducts. Other than that, the instructions are really good and easy to understand and the video was helpful- although I do wish they had shown some of the steps from various angles and slowed it down a little bit. It was a big project but it's doable for anybody. Just plan on it taking a while.
Now that the price has gone up, the cost is a bit harder to justify when the quality of the competing products is so similar. However, having it in my gym has been stellar and and I have no complaints at all.
Performance
Value
Build Quality