| Really? 6k miles is a belt tension, not change as far as I am aware. As the belts will cost approx £80 (might be more now) I doubt you'd get away with £250 with that.
As Ducati dealerships are all going to be charging the same hourly rate, you will (probably) find that the 6k will cost you about £450 and the 12k (which includes the belt change) about £550. Give or take. It's a 10 hour service, which at £35 an hour is £350 labour, plus oil and filter, plus petrol filter and o-ring.
Of course, I'm happy to be corrected on any of the above.
Doesn't the service book detail what should be done? | 
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