Let me start by saying this cart is exactly what you'd expect for the price - a basic, lightweight storage solution that gets the job done (with some limitations). I've been using mine in my craft room for about three months now.
The assembly was ridiculously easy - I had it put together in under 10 minutes without even glancing at the instructions. All the parts fit together smoothly, though I did notice some wobbliness right away.
Where this cart shines is its mobility. The wheels roll surprisingly well on my hardwood floors, though they do get stuck on small bumps or transitions between flooring types. The locking mechanism works adequately for keeping it in place during use.
The plastic bins feel cheaper than I expected - thin enough that you can see shadows through them when held up to light. They've held my collection of yarn and fabric scraps without issue, but I wouldn't trust them with anything heavy. One user suggested putting heavier items only in the bottom bin, and I've found this to be good advice to prevent tipping.
My biggest complaint is the stability. Even with moderate use, the cart develops a noticeable lean over time. It hasn't collapsed yet, but it definitely feels precarious when moving it around my workspace.
For $30-40, it's a decent option if you need temporary or light-duty storage that can be moved occasionally. Just don't expect industrial strength or longevity from this piece.