Talk about a return on investment!

While attending a charity event on November 1, Dan Dotson — who operates his own auction house and frequently stars in Storage Wars on A&E — says he was approached by a woman who told him a family friend had recently purchased a storage unit he had auctioned off and had quite the story to tell in the days that followed.

Turns out, the man, who was a friend of the woman’s husband, found a mysterious safe in the storage shed that held the surprise of a lifetime.

“The first person they called to open the safe, I guess, couldn’t, or didn’t, so they called a second person,” Dotson recalled in a video posted to Facebook on November 5. “When that person opened it up, inside the safe — normally they’re empty, but this time it wasn’t empty— [and] it had $7.5 million cash inside.”

While it was a potentially life-changing discovery for the unit’s buyer, it was also meant someone out there had just lost an enormous amount of money. But, fortunately, this story has a happy ending for everyone involved.

Dotson revealed that when the original owners of the unit found out that it had been sold — with their cash still inside — they quickly contacted their attorney to negotiate a deal with the new owner.

First, the original owners offered $600,000 to return the money, but then settled on a deal that saw the man return the money for a $1.2 million reward. While he didn’t keep the full amount, the man still came out with $1,499,500 in profit on a measly $500 investment.