Tamagotchi Paradise is sold out… Why are nostalgic items so popular?

The recently released Tamagotchi Paradise sold out in both offline stores and online stores as soon as it hit the market. The limited edition, in particular, is reportedly being resold for over 10 times the regular price.

The used price is 400,000 won ;;

It's amazing that the toy that we used to wear around our necks in the 90s is a craze again. These days, there's even more fun in decorating it with cases and key rings, so there are a lot of certification shots.

The functions were also very different from what I knew.

Has anyone actually saved it??