What's something you've done that unexpectedly made you a lot of money?

Source: Quora

Answered by: Julian Frank

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A couple of years ago, I was selling an old laptop on eBay, and I listed it for about 200 dollars.

Or, at least I thought I did. It turns out that I added an extra zero, so the price was set at 2,000 dollars.

I only found this out when I got a notification saying that the item had sold. I was pretty happy.

The funny thing is that the buyer never messaged me about the price or asked for a refund or anything. He just paid and let bygones be bygones.

Fine by me.