Pokémon cards
AVERAGE OG PRICE: $10-$20
MIGHT FLIP FOR: $100,000
Your parents disliked that, but they will be happy to know all the Pokémon cards you collected back in the day are finally worth something. The most valuable of all? Perhaps the Japanese-version Pikachu Illustrator card. In 1998, one sold on eBay for a large sum of $100,000.
The series was first created in 1995 by the Japan-based Satoshi Tajiri. The trading card game, which was based on the animated series, launched in the U.S. in 2003. Much like Beanie Babies, it drove kids to covet the entire collection. By March 2018, it had sold over 25.7 billion cards worldwide, but if you though all those billion pieces are still out there, you are mistaken. The one you are currently sitting on could be the only one in your state and you are probably sitting on money.