Spare securing plate for battery Stick Up camera

I need several base plates for my battery Stick Up Camera so I can move it to different locations around the house easily without having to unscrew the baseplate each time, and screw the extra base plates permanently to the different locations. Can I buy them separately without the kit that goes with them (the kits cost almost £30 each, whereas the plastic base plates should be at most a couple of pounds). I would need about four so £120 for four kits sounds excessive). The reason I bought a battery camera was so I could easily move it.