Ive bought from kewbzUK many times, and shipping is always fast. I wanted to mix parts from the black and the stickerless MoYu RS3M to build a cube trainer for practicing just cross / just one F2L pair / just F2L / just OLL / just PLL, but with a good, magnetic cube, and the parts are all interchangable. It's an old cube, out of stock in other places, but KewbzUK still have it for a good price. Very happy with it, alongside a modern GAN, just for a fun (and a bit pointless) cube trainer with all black pieces and only some faces that I want coloured