Accident – almost hit-and-run – how to deal with an accident?

Hello, on the employee parking place someone drove into our Punto, we did not assume any high damage, but now the KV is over 250€ The opponent has been caught and has already reported the damage, the debt question is now clear. But the Punto EZ 08/2005 KM 103155 black 8V Active Clima , runs risk of total damage The HDI would like an expert report, which I have ordered now, comes on Monday, how is the replacement value determined, I can hardly sleep, at mobi le.de and autoscout I find the most different values. Does anyone have experience there? LG Curly