If I bought an s4rs with 3000 mi. on it, the only thing I'd do is ride it - a lot. At about 7500 I'd have a good Ducati shop check the valves and possibly change out the belts.  Look to spend about $1000 for that service.

The clutch plates should last several thousand more miles and the basket for a good deal more than that - prob well over 30,000 mi. My basket has 27000 and looks fine.

3000 mi. is just getting broken in good.

A good thing about the Desmo Quattro motor is that you get to mod the intake and exhaust and use a PCM to work out fuel injection vs. having to go with a Ducati Performance ECU to accomplish the same thing with the TESTA engine.

One of the best bike ever made.  If it's a good deal $$$ wise, buy it and enjoy. [moto] [moto] 

Of course as always YRMV

LA