Contact plate (Zündschloss) Volvo 850 Kombi

Hello together, some time ago I asked here about an electrical fault and got help immediately. I was pointed out to the contact plate in the ignition lock at the Volvo 850 Kombi. Yesterday I was finally at a Volvo dealer near us (after the error now permanently occurs) and wanted to buy the part. In the forum it was written that the plate costs 35-50 Euro, and when the dealer then yesterday wanted to have 152,- Euro without installation I was quite surprised. Therefore my question… Is there different parts or is this perhaps different from model to model? 152,- Euro for the contact plate was too expensive for me and therefore I ask here again, maybe someone has an idea what went wrong… Didi