Korea has one of the most developed e-commerce markets in the world, worth roughly $200 billion in 2025 and accounting for close to half of all Korean retail sales. For a foreign brand the practical question is narrower than the market size suggests: Coupang and Naver Smart Store are the two platforms that matter, they work in fundamentally different ways, and the mid-tier marketplaces are in trouble. Here is how they compare and which one fits which kind of business.
The market in brief
Korean online retail grew about 5% in 2025 to around $200 billion. Two platforms dominate, and the gap between them and everyone else is widening.
Coupang holds roughly 22.7% of the market and runs Korea’s largest vertically integrated logistics network. Its Rocket Delivery service reaches about 70% of the population, and next-morning delivery is the expectation rather than the premium option.
Naver Shopping, which includes Naver Smart Store, sits second with gross sales estimated around 40 trillion won for 2024. It works completely differently: rather than warehousing and shipping, Naver aggregates sellers and routes discovery through search.
SSG.com holds a meaningful position through Shinsegae’s department stores and supermarkets, particularly in fresh groceries.
Below them, the picture is bleak. Gmarket, 11st and Lotte On have all been sustaining losses. More seriously, Tmon and Wemakeprice collapsed in 2024, leaving merchants unpaid. That is worth remembering when a smaller marketplace offers attractive terms: settlement risk in Korean e-commerce is real and recent.
Cross-border pressure is also increasing, with AliExpress passing 9 million monthly active users by mid-2025 and Temu competing hard on price.
Naver Smart Store
Smart Store is Naver’s seller platform, and its defining advantage is that it plugs directly into Korea’s dominant search engine. Products surface in Naver Shopping results, which is where a very large share of Korean product research begins.
What works well: Low commission relative to other marketplaces. Direct integration with Naver search and Naver Pay. You control your storefront and your brand presentation. It connects to the rest of the Naver ecosystem, so blog and cafe content can feed your store.
What is harder: You handle your own fulfilment, so no Rocket Delivery equivalent. Discovery depends on ranking well in Naver Shopping, which means the same optimisation work as the rest of Naver SEO. And standard registration requires a Korean business registration number and a Korean bank account.
That last point stops most foreign brands, though there are workable routes around it. We covered them in detail in can foreign companies sell on Naver Smart Store.
Best suited to: brands with distinctive products, a story to tell, and the patience to build organic visibility. Especially strong for beauty, fashion and lifestyle.
Coupang
Coupang is the closest thing Korea has to Amazon, and the comparison holds in the ways that matter: enormous logistics investment, a paid membership programme, and a marketplace where price and delivery speed dominate the buying decision.
What works well: Access to the largest single pool of Korean online buyers. Rocket Delivery removes the fulfilment problem entirely if you use it. Purchase intent is high because people arrive at Coupang ready to buy rather than to browse.
What is harder: Commission and fulfilment fees are higher. Competition is brutal and largely price-led. Brand differentiation is limited, since your product sits in a standardised listing beside near-identical alternatives. And Coupang has a history of competing directly with its own sellers through private-label lines.
Best suited to: commodity and repeat-purchase products, competitive pricing, and brands that care more about volume than about controlling the brand experience.
Gmarket, 11st and the rest
Gmarket, now owned by Shinsegae, and SK’s 11st were the original Korean marketplace giants. Both retain real traffic and can still produce sales, particularly in certain categories.
But both have been losing money, and the market is showing clear winner-takes-most dynamics. For a foreign brand entering Korea with finite attention, these are second-phase platforms rather than starting points. Get established on Naver or Coupang first, then expand if the category justifies it.
Choosing between them
A simple way to think about it.
Choose Naver Smart Store if your product needs explaining, your brand story matters, your margins cannot absorb high commission, or you are already investing in Naver search visibility. Discovery-led selling.
Choose Coupang if your product is understood at a glance, you can compete on price, delivery speed is a purchase factor, or you want volume without building an audience. Demand-capture selling.
Do both if you have the operational capacity. Many established Korean brands run Smart Store for brand-building and margin, Coupang for volume. It is more work, and it is not where most foreign brands should start.
Practical requirements for foreign sellers
A few things apply regardless of platform.
Business registration. Selling directly on either major platform generally requires Korean business registration. The realistic alternatives are establishing a Korean entity, working through a distributor or reseller, or using a market-entry partner who can operate the store.
Korean-language product content. Not translated listings. Korean shoppers read product detail pages closely, and Korean e-commerce convention favours long, image-heavy detail pages that would look excessive in a Western store. This is a localisation job.
Customer service in Korean. Both platforms measure seller responsiveness, and it affects your visibility as well as your ratings.
Compliance. Korea’s Personal Information Protection Act governs customer data handling, and certain categories carry their own certification requirements. Cosmetics, food and health supplements in particular have import and labelling rules that need checking before you list anything.
Frequently asked questions
Which is the biggest online marketplace in Korea?
Coupang, at roughly 22.7% market share, with Naver Shopping second. Together they account for a large majority of Korean online retail attention.
Can a foreign company sell on Coupang or Naver Smart Store?
Standard seller registration on both generally requires Korean business registration and a Korean bank account. Foreign brands typically enter through a Korean entity, a local distributor, or an agency that operates the store on their behalf.
Is Naver Smart Store or Coupang better for a new brand?
Smart Store usually suits brands that need to explain or differentiate their product, because discovery runs through Naver search. Coupang usually suits price-competitive, easily understood products where delivery speed drives the sale.
What happened to Tmon and Wemakeprice?
Both collapsed in 2024, leaving merchants unpaid for completed sales. It is a useful reminder to weigh settlement risk when a smaller Korean marketplace offers unusually favourable terms.
Do I need Korean-language listings?
Yes. Korean shoppers expect detailed Korean product pages, and machine-translated listings convert poorly and signal that a seller is not really operating in the market.
Choosing the platform is the easy decision. Getting registered, building Korean product content that converts, and earning visibility once you are live is the work that follows.
Our Naver Smart Store setup and localisation service handles that end to end, including the routes available to companies without a Korean entity. Tell us what you sell and we will tell you which platform fits.
Market size and cross-border data: U.S. International Trade Administration, 2025. Platform share and seller figures: 2026 industry reporting.