Extended Dealer Warranty Cost on new 2023?

Afternoon fellas and ladies. My first post here. I am going to be buying a 2023 in the next month or two. I am looking at purchasing the dealer sold, extended warranty. My question is this: how greatly does the price vary from one dealership to another for the exact same warranty? And is there a dealer that is well known for selling the warranty at deeply discounted prices because they sell by volume? The reason I ask is because when I brought my brand new Corvette, this was exactly the case. There was one particular dealer who had the best prices. And he beat every other dealer by a minimum of $1000 for the exact same warranty. Would love to hear your thoughts and experiences. Thank you so much.

Here in SoCal, the dealer offered me one for $3995. I know they can go lower if you turn it down. I turned it down. Once the car is delivered I'll be refinancing with my credit union and they usually offer a better warranty package for about $1000-1500

Thank you so much!