> "Prototypes in production despite heavy chip shortages". Update 18.10.2022

"Considering all chips, the cost of each prototype resulted 1200 euros higher than what was initially planned"

That's disastrous. So the final product will either cost at least 1200 EUR (excl. VAT) more than planned just for the 4 mentioned chips, or yet another board redesign with reasonably priced replacement components is due.