Could be that Swiss customs takes ages to clear parcels. Could be that tax or import duties are complicated or simply just so high that it's not worth it. I knew a lot of people in Switzerland near the German border used to go shopping in Germany because was significantly cheaper, probably still the case today.
Not so much the case today that it is significantly cheaper because the Swiss Franc weak-end 7-8% in the last year to the Euro. Also, the German food is not comparable to Swiss food in quality. Example: Swiss meat is more expensive but then again it is from Switzerland and not form Poland (which can happen in Germany but not in Switzerland because of the tariffs on foreign meat).
Could be that Swiss customs takes ages to clear parcels. Could be that tax or import duties are complicated or simply just so high that it's not worth it. I knew a lot of people in Switzerland near the German border used to go shopping in Germany because was significantly cheaper, probably still the case today.