I also checked them out and loved it. With some digging around I think they are in some form of beta now and taking custom orders (hence the black box), but on their instagram (posted about 14 hours ago) they say they are about to release a public 1.0 version which should be affordable for an independent developer and large companies alike based on this link

https://globekit.us17.list-manage.com/subscribe?u=a3ee0f28d3...