Furbys
Average original price: $35
Potential earnings: $900
These electronic toys were speaking in their own language called “Furbish.” While parents were mostly annoyed by them, kids absolutely adored Furbys. The toys screamed across the room in gibberish, and their eyes rolled around all the time, and still, somehow, Furbys became one of the most popular toys of the ’90s. So, you might want to consider selling your Furby now because you can make a whopping $900 of it! That is, if it’s still in good condition and not torn apart, which many kids did to their Furby out of boredom.