When I first ran across its product page, it had been out of stock for like six months. I went to the manufacturer's website and ordered it from Germany.
The week after it arrived, Eden got some back in stock!
So I felt foolish... but it is possible to get the Pikilo even if Eden's not cooperating. And it's highly worth it---I love my Pikilo a lot. They ship free for an order over 80 Euro, too, so I got Pikilo and Alterno and a 2 Euro lollipop and it shipped free to America.
Seems like the manufacturer was the only place other than Eden where it was available, though.