Price differences windows, doors

creased should be more expensive due to the labor involved in production.

Is property. also so. But uncreased is not the norm, so rather the special design, which makes it a bit more expensive. However, the price difference mainly comes from the hinges. Uncreased is usually installed with concealed hinges, e.g. TECTUS from Simonswerk, which are quite costly. Add a magnetic latch lock and the door becomes really expensive overall. But I find double the price exaggerated. I have paid a 30-40% surcharge in recent years (however, once from the carpenter and once from a Czech manufacturer - both to my satisfaction). Personally, the look is worth it to me ;-)

- Plastic windows to aluminum windows

That varies greatly depending on perspective. The type of builder "(self-perception): 'price-conscious'" often, to put it mildly, has no qualms about discount stores, where the differences can easily be close to 50% for plastic. According to the specialist company, plastic is rather around 80%, and in my opinion, therefore only appears cheaper than aluminum based on simplistic calculations, since aluminum has much longer replacement cycles. I was a manufacturer of aluminum windows and don’t mind being considered biased for that reason. Personally, I would never take plastic for owner-occupied properties, but I grant every "bargain hunter" their plastic if it makes them happy. In an average earner’s private home – more about comfort, not luxury – "plastic suffices" is probably the general reality, but even there I would choose aluminum for the front door – not side entrance doors – and for lift-and-slide elements from 4m width upwards (as well as always for folding sliding elements). Read what else I write here, consider me reasonable and do the same, or think I’m quirky and do it differently :-)

When we were still looking for a general contractor to build our house, we contacted a variety of companies. None of these general contractors had aluminum windows as a standard part of their construction services, not even the higher-priced ones.
With the front doors, it was the case that companies in the mid-price segment already had aluminum doors as standard, but with billing rates that only allowed for a very limited selection of doors without extra charges.
Viewed over the lifespan of a window, aluminum may even be cheaper, but the initial additional costs have to be borne at a time when you don't necessarily have extra money.

Viewed over the lifespan of a window, aluminum might even be cheaper, but the initial additional costs have to be borne at a time when you don't necessarily have money to spare.

Yes, we had some customers who only switched to aluminum at the first replacement – so around the time the house was paid off. Before that, they had about half/half plastic or wood.

Hmm, from 1997 to 2016 we had a terraced house with plastic windows, all of which were still completely fine. Double glazed. How long is the replacement period supposed to be for aluminum vs PVC? I mean, you still have to live through that. And what causes a PVC window to break? You can replace the handle or something, a hinge or a rubber seal as well. Karsten

And what causes a PVC window to break?

Broken in the sense of fracture, no, rather not. A common reason for replacement is visible signs of aging - and that sellers often omit that rubber seals are also available separately and opening mechanisms can be adjusted.