The magnetic connectors is what makes it an expensive toy. The pluggable grid layout is nice but it could be achieved with a daughter board with pins sitting on top of any cheap SBC.
It would be trivial to modify the design to allow some form of locking blocks in place, whether through a sliding tile system, a lever lock, or a pin design. You could even do it yourself with 3d printing. Really depends if there's a professional environment that could use something like this. Maybe a lab or machine shop?