In 2019 I bought a 2003 Mercedes for somewhere between 5 and 10 percent of its sticker price, I guess pretty close to 5 if inflation is accounted for. Maybe even less.
It had 380k km on the odometer, but it had been through Lithuania so some of the modules showed 700k km when interrogated. Previous owner also told me that there's no way the 380k km is original.
I did have to do maintenance on it, but the only thing that really let me down was the steering rack. It failed and then a reman replacement unit failed too. Only reason I got rid of the car, otherwise I'd still be driving it. Bulletproof engine and transmission.