The cards I bought as a kid cost 50 times what I paid for them!

I found a Yu-Gi-Oh! card at home that I was crazy about when I was little.

It was sold only at events and was in unopened condition.I immediately put it up for sale on an Internet flea market site, and what was 200 yen at the time turned into 11,000 yen!
I was happy about this, and if the person who was looking for it was happy, that made me happy too!