They don’t have every possible color combo and the prices are a bit higher than they were during the group buy, but this is may be your only chance to get the Grid 600 keyboard case and the various modules, aside from the secondary market. I expect these to sell fast (well, the cases anyway).
Grid 600 case: https://en.zfrontier.com/products/grid600s
Grid 600 modules: https://en.zfrontier.com/products/grid600ms