What's old is new again — and, sometimes, more expensive.The resale market has reached new heights this year: One in three American luxury consumers has bought or sold on a resale platform, according to McKinsey's 2025 State of Luxury report. And some shoppers are buying with an eye toward investment. Online thrift store ThredUp found in a survey about the secondhand market that 47% of shoppers considered the resale value of clothing before making a purchase.A new report from luxury consignment shop The ...