From personal experience this is true for Germany also, since decades.
It's always SALE! SALE! SALE! Everything must go! %! %! %! or something similar.
The same was true for carpets for a time, but they seem to have fallen out of fashion, at least I don't see it that often anymore.
But this is a general thing in every downtown or shopping centre across all sectors. And similar for groceries. I enter all of these with one big default deny and fuck off mentality switched on.
What is it with bedding companies and criminal miss representation of prices?