This late-build, low-mile R129 generation SL500 looks like a good value for $11,900. Not many pictures, but it looks clean and original in them. Also I did check the data card to find that it has the desirable Xenon headlights option. If it’s truly a needs-nothing example, then the asking price is quite fair, if not slightly cheap.
Offered on Autotrader HERE by a private seller in the Phoenix area.