They are robbing you - poor quality and terrible service
Avoid this brand. The quality is poor and their customer service won't help you. I will never buy anything from them again; in fact I'll make sure people around me avoid them too. They are just surfing on "Deutsche Qualität" which is lazy and dishonest. I feel robbed.
I purchased 3 stainless steel aluminium pans after I decided I would "invest" in good pans for a couple of decades. The back of the pans gets a little brown over time which I don't mind however it did not change color in a uniform way. There are lots of spots on the back and traces as if of some liquid, presumably from the manufacturing process (cooling, coating... I don't know). All 3 pans exhibited the same issue.
I contacted their customer service (Demeyre in Belgium), played everything per the book including full description, photos, patience, explaining how I use the pans and take care of them, re-explaining... and eventually when I made my point crystal-clear, they just stopped replying. That's rude and unhelpful.
What can I say. I give them 2 stars because the pans look disgusting but they are still usable.