Most of us have some old electronics tucked away. You may kid yourself that you’re going to use them again, or feel like it’s not worth the hassle of selling, but you could be sitting on a gold mine.

To learn more about how to make a profit, keep reading for tips from expert sellers as well as some of the best-selling items on Facebook Marketplace, Craigslist and eBay. [See: Best Buy and Sell Apps ...

eBay (NASDAQ: EBAY) has finally come up with a genius program for the auction division that will appeal to anyone who doesn't want to star on "Hoarders." One simply signs up for the Goodwill "Sell It ...