I haven't seen any evidence that these were ever sold to the general public. It seems very unlikely to me, because eggs are cheap, and the alleged manufacturing process is labor intensive. If you're willing to take the risk making fakes there are many other more profitable options. See:

https://web.archive.org/web/20070518092606/http://www.tian.c...

https://www.hoax-slayer.net/fake-eggs-from-china/