The most expensive potatoes in the world

It would seem that even simply potatoes can cost thousands. Resourcefulness citizents who lives on island Nurmuate annually harvest no more than 100 tons of class "La Bonnotte" per year.
As that piece of potato (on a legend, this sort developed by supreme god of Incas) exclusively soft, it harvested only manually.
The most expensive potatoes in the world cost about 500 euros per kilogram.