Great value for money. Installation was straightforward and easy. However I think people are giving it too much praise and overlooking its issues just because of the low price: If you have the arm in any position extended more than ~15cm forward it wobbles a fair bit. There are no detents for any of the adjustment points (which makes it near-impossible to get your monitor exactly straight and level) and there is no tension adjustment for the monitor rotation. The cable guide is also made of very thin and flimsy plastic, which got warped just from my HDMI cable pressing against it over time. The upper side of the base clamp has only a few small rubber feet instead of the whole surface making contact with your desk, so if you have a honeycomb desk like the IKEA Linnmon be wary of this.
I still think it is higher quality than you would expect from the price. But if you can afford an extra $20-30, I'd recommend skipping this one and getting a better arm instead.