Found it on Amazon US side, Currently unavailable. BUT it will be soon. It’s getting closer to being live. Saw it should be live between April 15th & 17th and for around $59.00US. Amazon.com: Creality Official K1/K1 Max/K1C/K1 SE CFS Upgrade Accessorr Kit for Multicolor 3D Printing, Quick Connection to CFS,Dedicated New Extruder,CFS Upgrade Kit for K1 Series 3D Printer : Industrial & Scientific