If the modules work as claimed, then $360 a pop is fairly cheap. Real world PLC units capable of extensible digital and analog I/O, networked, usually cost anywhere from $1000 - $10,000 per unit.
These aren't little gateways to CNC machines built-in interfaces (although they can be), they're controllers and automation systems for factories and production lines.
These aren't little gateways to CNC machines built-in interfaces (although they can be), they're controllers and automation systems for factories and production lines.