The Sony 20-70mm is surely a great lens. In the USA the price is actually very ok, with $1099. But in Europe Sony really added a hefty price tag! At 1599 Euro it’s really overpriced as a standard f/4.0 zoom (although it is a special and good one).
Zeiss 24-70mm vs Sony 20-70mm, Tamron 28-75mm and 24-70mm GM by FotoKoch