My own fault!  I didn’t check the details before ordering and it’s a flat-pack item that you put together yourself.

Beyond that, assembly took a while, and the locations of the screw holes were marked but not drilled.  Drilling a tiny bit out of the holes helped enormously.  Just be careful to not go through the entire board. All the parts were included in the right amounts.  

When assembled, the cabinet is sturdy, just the right size for what I need, and the wheels turn really well, even on low carpet.