On top of RM costs, there is also time costs..
If the Merc happens to have no spareparts, you will have to wait for weeks to months..

Last time my friend's 1 week old Camry involved in flood. All parts can found, except the ECU and AC controller module.
Toyota Malaysia said all parts can be ordered but the total repair costs was estimated above 90k - 120k. Insurance asked him to claim for BER but he refused.
So ended up waiting for some other Camry to get totaled to salvage the ECU from potong kereta shops then repair by outside workshop. Total in and out workshop, about 5 months.