UPS
Apple
This sealed copy of the 1989 Prince of Persia was $5 at Sears and got donated to Goodwill - now it's sold for $2,000 on eBay
Prince of Persia originally launched in 1989 on the Apple II, and over the course of numerous ports, sequels, and reboots would eventually become one of the most influential games of all time - one whose legacy continues all the way through the Assassin's Creed series. Don't tell that to whoever just donated a sealed copy of the original game to Goodwill, though, because they just missed out on the opportunity to become $2,000 richer.