I ride the Laverda between 3000-6000k's a year, and have so for the last 17 years. Once they are set up properly and the bodges of one or more DPO's are taken care of you just ride them. Valve clearance needs to be checked every year or two, if on the tight side replacing shims means removal of cams, but nothing as dramatic and expensive as a Ducati Bevel. All parts are readily available, at least for the 180 degree crank triples and twins and again not in the Ducati price range. As the Laverda company chose Bosch electrics, Nippon Denso switchgear and instruments, Brembo brakes and put on a thicker layer of paint and chrome than the rest of the Italian competion at the time, the bikes have a slightly better build quality. I know that in North America the market is very thin and bikes fetch big money if and when they become available.
One word of caution! The classic bikes like 350, 500, 750, 1000 and 1200 were manufactured in the town of Breganze, Italy.
The more modern looking 650, 668, 750S and 750 Formula were made in the town of Zane, Italy and are ticking time bombs.
Engines are real crap!