Terrace roofing with shading - prices, experiences?

The day ends well after all. I have now received an offer from a company that has been mentioned positively here several times (R...) and which operates in the regions I want. Maybe it will still work out after all. Possibly also interesting for others, if I now compare my eight price indications/offers: the four local companies (Hamburg metropolitan area) are all between 22-26k, four other companies with nationwide installation teams do it for 40-60% of the Hamburg companies. Of course, I cannot compare material qualities to labor performance/references, but the minimum criteria are aluminum, laminated safety glass 10mm, roof blinds, gutters.

Well, it's actually simple. The assembly teams come from the East, where wages are lower; the few expenses don't make much difference anymore. They also don't leave after 7 hours and go home, but slog through 10, 12 hours, which is usual for assembly work.

The further east, the cheaper it gets. Wages in Saxony-Anhalt are around 70% of what is paid in Hamburg.
If the parts also come from the East, the further east, the cheaper, resulting in your deviations of 40-60%.

Is it generally to be expected that prices for aluminum roofs will fall?

The prices for aluminum seem to be stabilizing again..see screenshot.
But probably I am not thinking far enough…:)

Has anyone obtained current offers?
Or does anyone have a good supplier for northern Germany?

Regards