GeoMan wrote:
I was just browsing Philibertnet and i noticed that this expansion (10 tiles) sells for 19€...
Cheap... very cheap... I think i'll buy two to have a backup...

As always, its not so much the quantity of physical material for the price, but the quantity of gaming enjoyment for the price. I can imagine that a small expansion with only a few bits might really extend the life of a base game by creating enormous new gaming possibilities. On the other hand, an expansion with a whole box of stuff might really add almost nothing to a game. On which would you rather spend your 20 Euros?
Of course its also true that a little expansion with only 10 tiles seems less likely to justify the price, but you see what I'm getting at.