I paid $4k for mine...157k miles in decent shape. Perfect interior, working ac. Stereo was inop ($$$), one window was broken, and the paint was spotty. Never left me stranded! I drove it about 6k miles before the ASR and ABS lights started lighting up randomly and I decided to sell it.

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Current cars:
2000 ML55 AMG, 174k miles
2003 C240 T-Modell, 202k miles
1995 S320, 207k Miles