Original Game Boy ($1,000)
The Game Boy was revolutionary for gaming as it was one of the first mobile gaming consoles that had AAA games. The Game Boy was first released in 1989 and came out with several models through the years which led it to become one of Nintendo’s most successful products. The original Game Boys are extremely rare now and have increased in price over the years.
The 1989 Game Boy goes for around $1,000 in mint condition and is worth even more if it is still sealed inside the box. There are several other Game Boy versions that are just as expensive so keep an eye out to see which version you have.