When in California last year I attempted to look at three Triumph Daytonas listed on Craiglist, all at what appeared to be pretty fair prices.
Triumph Daytona #1 turned out to be incorrectly advertised, it was actually a lesser powered and unfaired model, the Speed 3. On Top of that, the bike did not function( not mentioned in the ad) because the 20 something owner had destroyed the clutch by doing multiple stationary burnouts with it to impress his friends. "I guess I shouldn't have done so many burnouts, but a new clutch is cheap!" he explained. He also informed me that he did not have the title for the bike, but that should be easy to obtain!
Daytona #2 belonged to a really unfriendly young lady who expected me to hand over the full asking price without first test riding the bike. The bike was advertised as pristine but the bodywork was scratched all over and the clutch cover had been ground off on asphalt. Not pristine at all.
Bike number three was sold before I got to it, then crashed within thirty minutes of purchase and returned to the original owner. The 18 year old buyer decided it was too much bike and the seller agreed. They negotiated a price for repairs and the young buyer left. The seller was at first willing to sell me the damaged bike for the reduced amount (he would not be out of pocket) then changed his mind mid deal.
After all of this Craigslist crap I glady purchased for a truly pristine 05 Daytona for sale at a Portland Ducati dealer.
I could test ride it and it even came with a wee bit of warranty . And of course proper paperwork.