For me, the other screw-in ones are better because they secure the shelves, but if you lift or push a shelf to fit something on top of it, then the shelf above, if it is light or empty, comes off and can fall on you or a child.

It is stable and secure once it is fully constructed and you don't notice anything.

Even on the wall if you don't screw it in. Unlike the screw-in ones, you cannot connect two such constructions together for further stability.

The assembly instructions are somewhat poor, 1 A4 page with some photos without descriptions, etc., and you understand what you can.

You first make the 4 columns and then you put the bottom shelf and then the second one in the middle and then the top one and then the rest.

Ideally, it requires 2 people for help in the beginning especially.
But if someone struggles against a wall, they will somehow fix it alone but it requires caution.

It is value for money, it is! But there are better constructions like the ones with screws.. But there you still need an electric screwdriver and it takes a long time to screw...
While with this one, it is approximately there and it requires caution during use, DO NOT detach any shelf. On the other hand, as a construction, it finishes very quickly in terms of time and in 20 minutes you have built it adequately fast for what it is, whereas with screw-in ones, you need from 30 to 40 minutes and for the first one, it may take an hour until someone understands what is happening.

Get it, but keep it away from children who climb, etc., and be careful during use. That's it.