Resale's Commercial Success Depends on the Overconsumption It Claims to Reduce

People who spend more on secondhand clothing also spend more on new clothing. A 2025 study published in Scientific Reports, conducted by Meital Peleg Mizrachi of Yale University and Ori Sharon of Bar Ilan University, found a strong positive correlation between spending in the two markets across a nationally representative survey of 1,009 U.S. consumers.

The secondhand fashion market, projected to reach $350 billion annually by 2027 according to the same study, has built its growth narrative on the opposite premise: that buying used reduces demand for new production.

The Displacement Claim

The resale industry's sustainability case rests on displacement: that a secondhand purchase replaces a new one. Depop's 2022 research, conducted with consultancy QSA Partners across 5,531 of its own users, reported an 88% displacement rate in the U.S. The methodology relied on self-reported survey responses from active Depop buyers, and the study was commissioned by Depop, a commercially interested party. ThredUp's 2025 Resale Report, published by a commercially interested party, found that 59% of consumers surveyed said they would seek more affordable options like secondhand if tariffs increased apparel prices. According to McKinsey and Business of Fashion's State of Fashion 2026 report, 43% of consumers who first discovered a brand through resale subsequently purchased firsthand items from that brand.

These figures describe what individual consumers say about individual transactions. They do not measure whether total consumption across both markets is falling, and no transaction-level methodology can answer that question regardless of sample quality. Displacement measured at the point of purchase records stated intent at the moment of a single decision. Total consumption is a population-level outcome shaped by budget reallocation, moral licensing, and the cumulative effect of lower average prices across a growing number of transactions. The Yale study, drawn from a nationally representative sample rather than a platform's active user base, addresses the aggregate question.

Parallel Consumption

The majority of secondhand consumers treat resale as an expansion of their shopping activity rather than a replacement for it. The study's cluster analysis identified two behavioral profiles. The larger group, 59% of respondents, purchased frequently in both new and secondhand markets and returned items at high rates. Members of this group retained garments for short periods and had increased their secondhand purchasing since 2020. The smaller group, 41%, bought less overall, spent more per item, and kept clothing longer. The division separates two relationships to clothing acquisition: additive consumption in the majority, contained purchasing in the minority.

Cluster 2's purchasing pattern is consistent with the displacement thesis: fewer total garments, longer retention, higher per-item investment. If these consumers represent 41% of the secondhand market, displacement is real for a substantial minority. The aggregate outcome, however, is determined by volume, not by the number of consumers in each group. Cluster 1's 59% share understates its weight in the system because this group purchases more frequently, cycles garments faster, and generates a disproportionate share of both transaction volume and resale inventory. The displacement occurring in Cluster 2 coexists with, and is overwhelmed by, the additive consumption pattern in Cluster 1.

Between 2020 and 2024, respondents reported a 38% increase in online purchases of new clothing. Secondhand purchasing grew over the same period. These two trends did not offset each other: 19% of respondents reported discarding clothing specifically to make room for new purchases, and the most common disposal method was donation to charity stores, at 49% of respondents. Donations themselves increased (37.2% of respondents gave more between 2020 and 2024), yet total purchasing volumes rose in parallel. The disposal pipeline expanded to accommodate higher throughput, not to reduce it.

The pattern was most pronounced among younger consumers. Among respondents aged 18 to 24, 79% had purchased secondhand clothing. Students were the most frequent secondhand buyers, at 84%. These same cohorts reported the highest volumes and frequencies of new clothing purchases. The generation entering peak consumption years is forming its purchasing habits across both markets simultaneously.

Resale Platform Economics

Resale platforms generate revenue from transaction volume. Whether those transactions reduce aggregate clothing production does not factor into the business model. Vinted, the European peer-to-peer marketplace, demonstrated the commercial reward for volume in 2024: consolidated revenue reached €813.4 million (a 36% increase over 2023) and net profit hit €76.7 million, up 330% from the previous year, according to the company's financial disclosures. By Q1 2025, Vinted had become the largest retailer by sales volume in the entire French apparel market, according to Business of Fashion. The RealReal, the U.S. luxury consignment platform, achieved EBITDA profitability for the first time in Q4 2023, also reported by Business of Fashion.

These results reflect an incentive structure that rewards listing velocity and purchasing frequency. Vinted charges buyers a protection fee and a percentage of the item price while sellers list for free, a model that maximises the number of items entering and leaving the platform at any given time.

Brand-led resale programs also generate value by increasing transaction frequency rather than reducing total consumption. Lululemon's "Like New" program, built with Archive Resale, gives customers store credit for traded-in items. Balenciaga's partnership with Reflaunt operates on the same trade-in-for-credit principle. These three models differ in ownership structure, margin distribution, and customer relationship. Peer-to-peer platforms like Vinted extract fees from transaction volume directly. Consignment platforms like The RealReal take a percentage of each sale and depend on a steady inflow of high-value inventory. Brand-led programs convert disposal into store credit that funds new primary-market purchases. The commercial structures differ, but the incentive converges: all three grow revenue by increasing the number of items moving through the system, not by reducing the total number of items in circulation.

According to McKinsey and BoF's 2026 report, two-thirds of brands entering resale cite customer acquisition at lower price points as a primary motivation. The trade-in-for-credit model converts a disposal decision into a funded new purchase: the consumer recycles an old garment and receives a voucher toward a new one. Under this structure, each secondhand transaction can directly fund or psychologically license an additional purchase in the primary market.

Moral Licensing and the Rebound Effect

The rebound effect, rooted in environmental economics, occurs when a reduction in cost increases total demand. Because secondhand clothing is cheaper than new, the lower price per item enables consumers to acquire more garments within the same budget. Total wardrobe spending may stay flat or rise moderately, but the number of items entering the wardrobe grows. The aggregate result is more clothing per consumer at a lower average price point, distributed across both markets.

Moral licensing provides the psychological complement. The theory holds that performing a perceived virtuous act gives a person license to subsequently act less virtuously. Buying secondhand registers as an environmentally responsible choice, and that perception can reduce the psychological cost of buying new. The Yale study found that greater knowledge of the fashion industry's environmental and social costs did not predict more sustainable purchasing behavior. Respondents who demonstrated the highest awareness of fashion's environmental impact were not purchasing less overall. The awareness existed alongside the consumption rather than constraining it, a pattern consistent with moral licensing operating at scale.

The Supply Dependency

The secondhand fashion market grows because total clothing production grows. According to the Yale study, the fashion industry produced an estimated 2.5 to 5 billion surplus garments in 2023. Fast fashion has driven an estimated 400% increase in clothing consumption over the past two decades, according to Peleg Mizrachi and Sharon's 2025 analysis. Secondhand markets absorb a fraction of that surplus. The more new clothing enters the system, the more inventory becomes available for resale.

Resale's commercial viability depends on a constant supply of recently purchased, lightly worn garments, and the 59% of consumers in the high-consumption cluster provide exactly this supply through their pattern of rapid acquisition and disposal. The relationship, however, is not simply that new production feeds resale. The preceding sections describe a mechanism that runs in both directions: trade-in-for-credit programs convert disposal into funded new purchases, moral licensing reduces the psychological cost of buying new after buying used, and the rebound effect enables more total acquisitions at lower per-item prices. Each new purchase eventually becomes available for resale, which generates the transaction volume on which platform revenue depends, which in turn funds the marketing and infrastructure that recruits more consumers into the cycle. The secondhand market does not passively absorb surplus. It participates in a reinforcing loop where resale activity and new production each accelerate the other.

Resale's commercial trajectory and its sustainability premise rest on contradictory structural assumptions. The commercial model requires high-volume, frequent transactions across a growing consumer base; the sustainability premise requires those transactions to displace new purchases at a rate sufficient to reduce total production. The Yale study's finding of a strong positive correlation between the two markets suggests these conditions do not coexist at the population level. Individual consumers may intend displacement when they buy secondhand, but the aggregate pattern is supplementation. The commercial model, the behavioral mechanisms, and the supply dependency form a reinforcing cycle in which resale activity and new production accelerate each other rather than trading off. That cycle is not currently subject to independent measurement: no major resale platform reports metrics on total consumption among its users, and no regulatory framework in the U.S. or Europe requires such disclosure. The displacement claim on which the industry's sustainability narrative depends has not been validated by any measurement system independent of the parties making the claim.

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