KfZ insurance – thank you, I’m served

Hello, today I was reminded once again that the vehicle is in my possession for another year, the KfZ insurance sent me the contribution invoice. There you get a SF class downgraded, but still have to pay significantly more. Well, you have a special announcement right. Flight looking for an alternative, because I sit down almost on the bottom of my pants. Currently I should pay for the vehicle 800,90 Euro. With another insurance the contribution would be 442 Eur o go down !! And that of course with otherwise identical conditions (same mileage, same insurance conditions). Well, maybe you can explain it. But now comes the hammer, which I don’t understand at all: If I were to reinsure my vehicle with my current insurance, I would have to pay only 528 euros Can I please explain the logic behind it? Thank you.