I once saw a mother in her 30s, who, after winning newly released Pokemon cards in a lottery at store A, immediately took them to sell at store B diagonally opposite.

I once saw a mother in her 30s, who, after winning newly released Pokemon cards in a lottery at store A, immediately took them to sell at store B diagonally opposite. If something worth around 5,000 yen can turn into almost 20,000 yen, then even if you're not interested in cards, you'd do it, wouldn't you?