Used this in an office at one point. Cheap, but lots of flaws. We used screws, but even so, the boards started buckling over time, probably because of the weight; I suspect some good epoxy glue is the only way to avoid that. Also, with some markers, the writing became permanent after a while. Another minus is that you can't get them in sizes as large as magnetic whiteboards.

I can recommend whiteboards from Best-Rite, like this one [1]. Comes up to 8x4 feet (243 x 122 cm), easy to hang, porcelain is easy to wipe off, has a good-looking frame, and being magnetic, you can attach things (magnetic tray, eraser pad, markers) to it. But not as cheap, obviously.

[1] https://www.amazon.com/Best-Rite-Porcelain-Markerboard-Silve...