Hence getting the 200 $ total of 4 hobs as a premium to whatever the base standalone stove costs, assuming that you could in the factory just mount these units in the hobs. Just need to modify a little to have remote control as the original uses a microcontroller to handle the touch IO and the high frequency transistor triggering, which may both not work over a wire long enough to reach from the back hob to the front of the stove where you'd want the controls to be to not reach over or even in-between the hobs in operation.