Ah, now I see what you're looking for. Generally I think of "board games" as Monopoly, Stratego and the like, and what you list as role playing games.

eBay currently lists 1,275 things related to Zombicide, so I would again suggest taking a look there.

At the retail level you're more likely to find those sorts of games in specialty stores, and generally they don't discount, although I can't say how their prices compare to your local stores. Most comic book stores carry fantasy/role playing games and related stuff. The relatively weak euro may work against you in shopping.

Another thing to consider is checking for any sort of gaming convention/comic book festival/show along your route.