Straight from Ducati NA:
600 mile service - $144.38
7500 mile service - $ 256.88
15000 mile service - $ 362.20
After 7500 mile Valve service ("Service A") - $ 294.80
After 15000 mile Valve service ("Service B") - $366.30
*Note that these Ducati numbers are labor, not tax, and I'm not sure if it included parts, probably not.