I think you're assessment abut Ohio is probably correct Egor. We have a great choice in the UK - Ducati main "superdealers", Ducati dealers and Ducati specialists. The price for the same given piece of work goes down in that order. I stayed with a main dealer for all servicing for about 15 years and I routinely get 20% discount on parts and labour including clothes etc now. However, that hasn't stopped me doing some servicing myself on the 888 just because I can and that makes it cheaper. The specialists will do an excellent job at a fraction of the superdealer costs and often have many years of experience so you get real personal attention and focus.
Over the years I've owned and 851, two 888 SP5s, a 998, a 749 and three 1951 50cc Cucciolos. The only major problem I had with any of them was a burnt out regulator rectifier on the 851, all the others have been fantastic reliable bikes and believe me in the case of the first 888 SP5, I caned it for years around the isle of man. Not one serious issue, no valve problems and no major maintenance bills despite me sticking to the service schedules religiously.
I guess if you don't have the dealer choice locally, you have to be prepared to pay the rate for an exclusive bike or explore doing it yourself...