Once the sacred territory of dusty flea markets and grandma’s handbags retrieved from the attic, this market now represents a tidy sum of $320 to $360 billion by 2030. Yes, you read that correctly: your antique leather totes and forgotten heels now have a global market value. Who would have thought that Grandma, with her slightly old-fashioned sense of style, was actually sitting on a goldmine under her bed?

This market already accounts for 8% of the global fashion and luxury market and could reach 10% by the end of the decade. That’s 10% annual growth three times faster than direct sales. In other words: while some queue for the latest brand-new Birkin bag, others are dusting off their grandmothers’ treasures and striking it rich.

And it’s no longer just a hipster hobby: brands have finally realized that resale is a strategic channel to woo Generation Z.

Europe is leading the way, encouraged by Brussels and a growing eco-consciousness because nothing is as sustainable as your great-grandmother’s bag refurbished to perfection.

Leather goods remain queen, but watch out: watches and high jewelry are soaring. Soon, your old Rolex forgotten in a drawer could be worth more than your apartment.

So next time you stroll past a flea market and spot that slightly worn leather satchel, remember: it could very well be worth more than your car.