Just look at the right offer. The Digitec offer is CHF 886. The one from the rip-off club daswarenhaus.ch is at the moon price of over CHF 1500. Digitec customer service did not want to give me any information when I asked why this is the case and why it is tolerated. What this is supposed to achieve, apart from confusing customers, is beyond me. I hope that no one is stupid enough to buy from them.

This offer is not from Digitec itself but from "Das Warenhaus", which uses Digitec's sales platform.
In addition, the Sony FE 90mm is very poorly available, so those dealers who still have stock are also charging higher prices.