I'm gonna go out on a limb and say this is a replica (and therefore the ad is seriously misleading). The very nice replicas seem to price around that of a Harley.

I can only guess what a real one would cost

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1982 300TD 210K miles ("The Replacement" aka "The Anvil") - SOLD
1979 300SD 245K miles (never ending project)
2007 Pinarello F3:13
1995 Ducati 916 (SOLD, sniff)
1999 Ducati 900SSie (SOLD)