Some years ago I found in a garage sale an amazing Power Miners set, 8709. The box was opened, but the plastic bags were intact, instructions a bit crumpled, but everything else was in perfect conditions. I snagged it at a ridiculous price, like 30 euros for this and other random stuff.
I put it up on sale online, I wanted to make some money from it, but didn't want to ship it. Nobody has asked me about the set for 3 years, until last week a guy asked me if I was available to meet for the transaction. At that point, I had lost all interest in buying reselling stuff, I can say that I still enjoy flea markets, but the idea of taking advantage of people on the internet gives me the ick.
I met this guy yesterday, sold him a set that's nearly impossible to find and at a ridiculous price.
Today, he sent me this picture. I am so glad that I made a person this happy, he couldn't believe it and kept on thanking me, I felt like Santa Claus.
Yeah, I wasn't so sure about selling it to someone who could keep it closed and unplayed just because it's valuable. This is much better.