Well it appears that these awesome figures by Pixefillu are finally available for purchase. You can get these 3 colorways of the Space Crab figure directly from the Wheaty Wheat website for $59.00 bucks a pop and you can still get the OG white color way from the site as well for $49.00. These are really cool figures and I saw the them first at VTN a couple of years ago.
Space Crab (Red) Variant / RSC-304
Space Crab (Green) Variant / GSC-160
Space Crab (Black) Variant / BSC-80