The best story is a metal flake tiger stripe flying V built by GMP that I saw in someone's NAMM show pics some years ago. So far as I know there's only one and it was love at first sight. I didn't really bother to look for it as the odds of me stumbling across it would have pretty much been zero.
Randomly out of the blue I one day got a call from hippietim, who I've never met in real life and who had no idea I really wanted that particular guitar, "Dude, guess what I'm holding. Let me buy it and send it to you. You really need this." Yes, yes I did really need that. What are the odds, right?
But wait there's more: a couple of years later I got a message from a guy who'd seen a pic online and told me about ordering the guitar, falling on hard times and having to sell it. He said it was his favorite guitar and he'd love to buy it back. Given that the name, address, phone number, store & price he gave me matched the original receipt which was still in the case I could hardly turn him down so I sent it home for what I had in it.
Honorable mention: I tried to order a Washburn EC-36 in, IIRC, the very late 80s only to find out that they'd just stopped production and none were available. A year or so ago I finally acquired a really nice one that looks like it has never been played.