Saturn works like MM their online stores are independent, so they could/might still have stock .
If you go to the stores though, and I have been to 10 !! Different ones across HESSEN and Bayern... and there are NONE in stores - so yeah they are somewhat harder to find - but not impossible.
Fair enough but you can check if a store nearby has it in stock on the site. And at least the moon one is avaible in a store 20 minutes from my place, so I guess it's even still possible to get them in stores, just depends on luck