According to the pricelist the smallest case comes up to 149,- Euro. But I`m not sure it is big enough for at least one pistol.
The idea is catchy, considering the case can be locked down into the trunk of the car or onto any other pole or so.
But you are right, very pricy.
But on the other hand, taking the prices of brand name pistol cases like Peli, Berwall, or the original high class cases sold by the pistol manufacturers like Sig and co. the price is not that far away and give mor security.
at egun, a internet auction site for firearms here in germany, they are sold for 85 Euros.