Escenografia Epsilon apparently only made 4 packs of these houses. Perhaps you can be one of the lucky 4 to get them.
From the announcement:
Today is available the new epsilon pack: Caen Pack. This reference is a limited edition and we only produce 4 copies.
The 2 houses are perfect for flames of war battles. The houses have two floors and the player can put their miniatures inside. We send the pack painted with an advertisement in the wall and the houses are Ready2play.
The price is only €66 for the two houses.
Remember that the shipping cost in epsilon is free if the order is over €70.01.