Sega Genesis
Average original price: $200
Potential earnings: $1,000
The Sega Genesis was the very first video game console for the majority of people. Nowadays, we have plenty of online games and consoles to choose from, although this particular video game console will always have a special place in our hearts. Remember the Sonic the Hedgehog that kept us entertained for hours? We can potentially make $1000 off this game on eBay. Yes, you heard that right!