Ok, if we're going to tell stories... For all of these I live in Denver...
Found an UrS4 on line in Sacramento. I have a good gear head friend there who checked the car out. He mentioned to me it didn't seem to pull the way he expected but since he'd never driven one before I kinda discounted that. Had it checked out at 2Bennett, a very well known Audi shop, who gave it two thumbs up.
I fly in, friend picks me up and takes me over to the sellers place. I check out the car. It doesn't pull the way I expect but it's otherwise in good shape and 2Bennett checked it out, right? So I bought it and drove home. It took 3 gallons of water to get it home. I rebuilt the head and everything seemed fine but I believe in karma and I sold it. Lost $$ and time. Wife pissed at me.
Found a 944 Turbo S Rennlist. Was a car that had been local to me and I'd actually driven 3 years beforehand. Seller seemed quite wealthy, lived in a McMansion, had a lift in his garage and 3 other Porsches. Had the car checked out by a Porsche shop in Detroit, near the seller. Told them specifically what I wanted them to look at. They gave it two thumbs up. It was winter and I didn't have a ton of extra time, so I just bought it and had it shipped out to me. Showed up a complete basket case. I ended up LSx swapping it. Spent TONS of money on it, wife pissed at me.
Found a Nogaro B6 S4 Avant in Salt Lake City. Had it checked out by a well known Audi shop there, they gave it thumbs up. I wire the money to the seller, he picks me up at the airport. I start to walk around the car and instantly notice that the drivers side right rear quarter has had paint and body work done to it. Both the seller and the PPI shop had said no paint/body work. Car seems otherwise fine. So, while pissed, I drive it home. Get home, get the car in the air and its missing the belly pan and several other parts that don't affect it mechanically but cost $$ to replace. Find that the seller hadn't put the title in his name and even worse, had signed the title! So now not only do I have to track down the guy who sold the car to him, but he has to go and request a duplicate title from Utah! Thankfully I did find him and he was an enthusiast and took care of it for me. This could've ended very poorly for me. I'm pissed at myself for this one, I should've made sure the title was in the sellers name.
Found a B5 S4 avant in Wyoming. Seller says its perfect. Friend drives me 6 hours up there to pick it up. Airbag warning light is on. Scan it and it's the airbag ECU, which is a $1000 repair. Seller does lower his price but still.
I've done exactly ONE fly n drive when everything worked out the way it should.
Conversely I've sold quite a few cars to people who've flown in, as far as I know, they've all been happy as I never heard anything from them. I tend to take extremely good care of my cars and point out any flaws to the best of my ability. I don't let the sellers take my plates, too much liability.