The resale industry is no longer the quirky side hustle of a few enthusiasts or a hobby that took place in the back room. It has become a serious business that is changing the way Americans shop. Economic pressure, environmental concerns, and shifting buyer preferences have turned resale into a genuine growth sector. In 2023, the market reached a staggering $43 billion in the United States, and its momentum shows no signs of slowing. Online resale platforms now provide business infrastructure for hundreds of thousands of sellers. From casual flippers to full-time professionals, these platforms serve as the backbone of countless small businesses.
This guide explores how resale is evolving into a mainstream business model. We take a closer look at the platforms leading the charge, spotlight emerging competitors making waves, identify the product categories driving growth, and analyze what today’s buyers are actively seeking. Whether you’re an investor, a reseller, or someone trying to make sense of the landscape, understanding these trends is essential to finding your place in resale in 2026.
Once a niche hobby or side activity, reselling has grown into a massive U.S. industry. What started with garage sales and thrift-store flips has become a highly structured, tech-driven, multi-billion-dollar ecosystem. The secondhand market hit $43 billion in 2023 and expanded at a pace seven times faster than traditional retail. Inflation and economic uncertainty continue to push shoppers toward greater value, driving demand for affordable and accessible alternatives. Consumers are embracing resale for its price advantages, convenience, and variety, while platforms, investors, and full-time sellers respond by fueling what many now consider the professional era of reselling.
More than half of Gen Z shoppers report checking resale platforms before buying new, and older generations are increasingly following suit. Resale is now viewed as a convenient and cost-effective option for a wide audience. This shift has produced a new class of professional resellers who rely on advanced tools such as analytics dashboards, brand partnerships, AI-powered listings, and dedicated logistics solutions to grow and scale their operations.
As we move through 2026, this guide breaks down the platforms setting the pace, the startups gaining traction, the product categories leading growth, and the sourcing strategies that keep top sellers stocked and competitive.
Key Resale Platforms: Established Leaders
When it comes to the U.S. resale market, a select few platforms are really killing it, each with their own take on how to bring sellers and buyers on board. They’re the ones shaping where and how Americans are buying and selling secondhand items. In this section, we’re taking a closer look at the growth, user demographics, and strategies of the resale industry’s leaders.
By 2026, the biggest resale platforms are still largely dominating the market, thanks to a steady rollout of new tools and services designed to make sellers’ lives easier while capturing buyers’ attention.
eBay
eBay remains a major global player, generating more than $75 billion in GMV, with refurbished electronics and pre-owned tech among its fastest-growing categories. Its Certified Refurbished program has been a game changer, accounting for more than $2.9 billion in GMV and playing a major role in building buyer trust.
In 2026, eBay is continuing to expand its livestream shopping efforts through eBay Live. The platform has moved beyond sneakers and watches and is now targeting high-demand categories such as refurbished electronics, collectibles, and home technology.
Livestream events are now scheduled daily, with integrated chat, instant offers, and personalized buyer queues becoming standard features. eBay’s core demographic remains Gen X and Millennial users, particularly men shopping for electronics and collectibles. In response, the platform has invested heavily in AI-generated product descriptions, real-time chatbots, and eBay Live, a livestream shopping tool that brings high engagement to segments like sneakers and smartwatches.
Poshmark
Poshmark, with over 100 million users and more than 2.5 million active sellers across North America, continues its transformation into a social commerce juggernaut. Posh Shows, its livestream selling feature, now hosts over 10,000 shows per week. Women aged 18–34 represent the platform’s largest and most active user base, contributing to the platform’s dominance in secondhand apparel, handbags, and beauty. The introduction of Brand Closet partnerships has encouraged small fashion labels to collaborate with high-volume Poshmark resellers, creating new revenue opportunities on both ends.
Whatnot
Whatnot, initially popular for trading cards and collectibles, has expanded rapidly into categories like fashion, sneakers, and electronics. With more than $1 billion in GMV and a 250% year-over-year growth rate, the platform has become synonymous with real-time auction-style sales. Its user base skews younger, with a large share of Gen Z and Millennial men tuning into nightly livestream drops. Whatnot resellers receive onboarding support, analytics dashboards, and even inventory financing, a major draw for professionals scaling their operations.
Mercari
Mercari is one of the platforms that has really made a name for itself thanks to its user-friendly interface and focus on simplicity. It aims to make selling easy for both casual and professional sellers. By 2026, the platform had reached an impressive 50 million downloads in the United States. Mercari has rolled out a suite of AI-powered tools designed to simplify listing creation, enhance images, and automate smart pricing, all with the goal of helping Mercari resellers move inventory faster. Its Mercari Local service, which allows buyers to pick up larger items the same day, has gained traction in 20 major metro areas. The service has proven especially appealing to Millennials and budget-conscious families looking for affordable deals on home goods, clothing, and electronics.
Up-and-Coming Platforms to Watch
When it comes to the resale market, established platforms remain strong, but a new wave of mobile-first apps is gaining momentum. These platforms emphasize social sharing and workflow automation, making the buying and selling experience more streamlined. Their rise is creating fresh opportunities for sellers, particularly in niche markets and fast-turnover verticals.
While the major platforms continue to scale, a new generation of niche and social-first apps is capturing the attention of younger users and specialized sellers alike.
Galaxy
Galaxy is where the resale world goes to get its TikTok fix, featuring short-form videos, beautifully curated storefronts, and swipeable livestreams designed to keep users engaged. In 2025, Galaxy saw a remarkable 300% increase in new sellers joining the platform. Approximately 80% of its users are under 30, and popular categories include streetwear, beauty, and lifestyle gear, creating the perfect environment for binge browsing. Sellers on Galaxy report strong engagement from video bundles and real-time dropshipping integrations, which are helping them gain meaningful traction.
Flyp
Flyp offers a different kind of innovation. Built around consignment, Flyp connects individuals with professional resellers who handle the full selling process. Their seller base doubled over the past year, with many identifying as part-time professionals or side hustlers scaling up. New tools like analytics dashboards and auto-messaging help sellers optimize their flow, while Flyp’s gig-like model attracts creators and influencers who don’t want to handle logistics.
Curtsy
Curtsy has struck a chord with Gen Z fashion shoppers who prioritize affordable, on-trend clothing. As a result, monthly active users grew by 90% over the past year. During the same period, most transactions came in under $30, aligning closely with the fast-fashion budgets of the platform’s core users. Campus ambassador programs and curated mystery boxes have further helped Curtsy position itself as a style-savvy and seller-friendly ecosystem.
Kidizen
Kidizen remains the go-to platform for parents buying and selling children’s clothing, gear, and toys. With more than 1 million downloads and consistently high re-engagement rates, Kidizen has built a loyal community of eco-conscious moms who regularly participate on the platform. Its co-seller program has been a major differentiator, allowing professional sellers to manage inventory on behalf of parents and share in the sales revenue. This model increases convenience for parents while strengthening overall platform loyalty.
Vinted
Vinted is rapidly expanding its U.S. presence, driven by zero seller fees and an easy listing process that appeals strongly to buyers. Its American user base grew by an impressive 150% in 2025. Buyers are primarily value-focused Millennials and Gen Z shoppers searching for casual wear and accessories at prices well below standard retail. Vinted is piloting new trust-building features, including peer authentication tools and upgraded shipping infrastructure, positioning the platform for continued growth as a major player in the U.S. resale market.
Together, these emerging platforms showcase what the future of resale looks like. They focus on ease of use, trust building, social engagement, and automation designed to simplify sellers’ workflows. As a result, sellers are increasingly experimenting across multiple apps to identify which platforms deliver the best traction for their specific buyer demographics and growth goals.
Top Growth Categories in the Resale Market
In 2026, not all resale categories are growing equally. While general secondhand spending is climbing, several standout sectors are seeing particularly strong performance based on buyer demand, resale value, and supply chain dynamics. According to ThredUP’s 2025 Resale Report and industry data from eBay, Whatnot, and Back Market, here are the categories leading the charge:
1. Refurbished Electronics
Tech is now the second-largest resale category behind fashion. Refurbished electronics grew 15% year-over-year in 2025, according to IBISWorld. eBay’s Certified Refurbished category alone brought in over $2.9 billion in GMV last year. High-demand items include iPhones, MacBooks, game consoles (especially PS5 and Nintendo Switch), and accessories. Back Market reported that over 70% of customers choose refurbished over new primarily due to price and warranty-backed assurance.
2. Sneakers and Athletic Footwear
Sneakers account for a sizable chunk of resale platform revenue. The global sneaker resale market is estimated to surpass $30 billion by 2030, and in the U.S., Whatnot and GOAT reported annual sneaker growth rates near 20% in 2025. Poshmark also noted that athletic footwear was its fastest-growing livestream category, especially brands like Nike, HOKA, and Adidas. Retro and outlet-exclusive models maintain strong buyer loyalty.
3. Women’s and Plus-Size Fashion
Women’s fashion remains the backbone of many resale platforms, but the real growth story is in plus-size fashion, which saw a 28% increase in resale demand year-over-year. A major pain point in retail, limited stylish inventory in extended sizes, translates into strong turnover on resale apps. Brands like Torrid, Eloquii, and Athleta command consistent premiums on Poshmark and Mercari, while vintage plus-size pieces are trending on Depop and Curtsy.
4. Baby and Kids’ Gear
According to Kidizen, resale of children’s clothing and gear grew 17% in 2025, with higher turnover in premium strollers, babywearing gear, and eco-friendly brands like Hanna Andersson and Mini Rodini. Millennial and Gen Z parents increasingly prefer gently used gear, especially for fast-growing children. Facebook Marketplace and Kidizen continue to be top destinations for these purchases.
5. Home & Kitchen Goods
The home goods category, especially small appliances, cookware, and storage solutions, grew 11% in resale volume last year, according to eBay’s 2025 internal metrics. Blenders, air fryers, vacuum sealers, and food storage containers are among the top sellers. Items with clean aesthetics or from known brands like Ninja, Vitamix, and Rubbermaid tend to turn over in under 10 days on platforms like Mercari and OfferUp.
6. Outdoor Gear and Fitness Equipment
Sales of outdoor and fitness gear jumped 14% year-over-year, boosted by seasonal turnover and wellness trends. REI’s resale program and peer platforms like Geartrade and Facebook Marketplace saw spikes in Q2 and Q3 for camping gear, yoga equipment, and hydration accessories. Resellers targeting niche sports (like climbing or trail running) are building loyal audiences and strong margins.
7. Handbags and Accessories
Luxury resale is booming, but so is the mid-tier handbag market. The RealReal reported that secondhand handbag sales rose 18% in 2025, with Coach, Kate Spade, and Michael Kors leading volume. Authentication-backed sales grew even faster; buyers now demand verified listings, and platforms like eBay and Poshmark have leaned into this by offering instant verification through AI and photo-based models.
Bottom Line: These categories are shaping sourcing strategies, influencing pricing tools, and driving specialization. Resellers that study product life cycles and focus on high-turnover niches will continue to outperform in a market where demand and trust intersect with value.
Conclusion: Where Resale is Headed
Key Takeaways:
- By 2028 the resale market in the US is expected to have a staggering value of over $70 Billion and for the most part its growth will be driven by online marketplaces.
- The platforms that are doing well are the ones that are embracing new technologies like live streaming and auto listing – not to mention tools that make it easier for genuine sellers to do business.
- It’s worth noting that it’s Gen Z and Millennials that are behind the drive to get into resale, and they have some very clear expectations for the way they like to shop.
- The areas that are showing some really impressive year on year growth rates in resale are refurbished tech, plus size fashion, kids gear and outdoor gear.
The U.S. resale market is moving fast, so fast that it can be difficult to keep pace. While much of this momentum comes from innovation and shifting consumer values, the market is also driven by increasingly attractive financial incentives. Live shopping, mobile apps, and advanced listing tools are transforming how goods are sold. The sellers seeing the greatest success are those who closely track consumer behavior, diversify the platforms they use, and consistently invest in building their own brands.
As 2026 arrives, the resellers who thrive will be the ones who remain adaptable. They stay closely tuned to emerging trends and remain willing to test new strategies, even when that means stepping outside their comfort zones.