If I were you I’d dispute it and provide documentation of your purchase price in June. How many miles have you put on it since? Have you gotten any offers (carvana, carmax, etc) showing what the value would be currently? These are all tools in your toolbelt towards negotiating for a better buyout. That being said if the insurance company pays out more and you’re at fault expect it to have an impact on your rates going forward.

How can I tell the difference?