What Koreans Actually Buy Online — Inside Coupang's Top 188 Bestsellers (July 2026)

What do Koreans actually buy online? The usual answer comes from government statistics: food delivery ranks first, groceries second — I covered this in my breakdown of where Koreans shop online. But that”s measured by transaction value, which gets skewed by a few expensive items.

So I tried the opposite approach this time. I counted by sales volume.

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Why Does Bottled Water Top the List?

The #1 spot goes to Jeju Samdasoo 2L x 12 bottles (12,800 won / ~$8.77). The #2 spot was the same brand in 500ml x 40 bottles, and #3 was Coupang”s own brand Tamsa mineral water 2L x 36. Add Icis (#4) and Dongwon mineral water (#10), and 9 out of the top 20 SKUs were bottled water.

Even across all 188 SKUs, water dominates with 19 products (10.1%) — more than any other single category. Only 8 brands appear, but they eat up multiple spots with different size options.

💧 Coupang''s top-selling bottled water by per-unit price (July 29, 2026 snapshot)

Per 100ml	Product	Price	Sales Rank
22 won	Tamsa mineral water (label-free) 2L x 36	15,990 won (~$10.96)	#3
23 won	Tamsa water (label-free) 2L x 24	10,990 won (~$7.53)	#50
24 won	Gayasan Millennium Water (label-free) 2L x 24	11,690 won (~$8.01)	#157
25 won	Icis White Cap (label-free) 2L x 24	12,180 won (~$8.35)	#11
27 won	Dongwon mineral water (label-free) 2L x 12	6,460 won (~$4.43)	#10
41 won	Dongwon mineral water (label-free) 500ml x 100	20,250 won (~$13.88)	#179
48 won	Namyang natural water (label-free) 500ml x 20	4,790 won (~$3.28)	#33
53 won	Jeju Samdasoo Green (label-free) 2L x 12	12,800 won (~$8.77)	#1
81 won	Baeksansu (labeled) 500ml x 40	16,220 won (~$11.11)	#98
89 won	Jeju Samdasoo Green (label-free) 500ml x 40	17,850 won (~$12.23)	#2

Two things jump out here.

First, the same water varies in price by up to 4x. From 22 won (Tamsa 2L) at the low end to 89 won (Samdasoo 500ml) at the high end — a 4x gap. Even limiting to 2L packs, the range is 22 to 54 won per 100ml (2.5x). Yet the bestseller is Samdasoo, one of the pricier options. In Korea”s bottled water market, Samdasoo is one of the rare examples where brand premium actually works.

Second, small bottles cost way more. The median per 100ml for 2L packs is 26.5 won, while 500ml packs come in at 41 won. For Samdasoo specifically: 2L at 53 won vs 500ml at 89 won per 100ml — same water, just different plastic bottle costs.

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What Sells After Water?

Group the categories and the picture becomes simple. Beverages, food, and household goods make up 68% of the list.

📦 Category breakdown of Coupang''s top 188 SKUs

Category	SKUs	Share	Top Items
Beverages	59	31.4%	Water 19 · Coffee 14 · Soda 9 · Milk 5
Food	36	19.1%	Seasonings 12 · Ramen 5 · Eggs 3 · Instant rice 2
Household	33	17.6%	Batteries 6 · Insecticide 6 · Laundry detergent 6 · Cleaning 5
Kitchen	10	5.3%	Disposables (paper cups, straws, gloves) 9
Beauty	9	4.8%	Razors 3 · Cleansers 2 · Body care 2
Fashion accessories	8	4.3%	Umbrellas 2 · Water shoes 2 · Socks 2
Office	6	3.2%	Copy paper 2 · Stationery 4
Digital	5	2.7%	Screen protectors 2 · PC peripherals 2
Health	5	2.7%	Contact lens solution 2 · Digestive meds · Pregnancy tests
Other	17	9.0%	Pet 4 · Appliances 3 · Tools 3 · Sports 3 · Baby 2 · Auto 2

Clothes and electronics are barely present. The 8 fashion accessories are consumables like umbrellas, socks, and water shoes. The 5 digital items are screen protectors, a mouse, and wired earphones. Smartphones, laptops, and luxury goods? Zero in the top 188.

The reason lies in the sorting method. Sales volume reveals “how often people buy something.” However expensive, a laptop you buy once every three years can never beat bottled water that people buy every week. This list doesn”t show how much Koreans spend — it shows the rhythm of their daily lives.

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How Much Do They Spend? — 78.7% Under 20,000 Won

💰 Price distribution of top 188 SKUs

Price Range	SKUs	Share
Under 5,000 won (~$3.43)	20	10.6%
5,000 - 9,999 won (~$3.43-6.85)	55	29.3%
10,000 - 19,999 won (~$6.85-13.70)	73	38.8%
20,000 - 29,999 won (~$13.70-20.56)	29	15.4%
30,000 won+ (~$20.56+)	11	5.9%

The median is 11,945 won (~$8.19), with an average of 14,196 won. The most expensive item was Huggies diaper pants 80-count (60,900 won / ~$41.74), and the cheapest was Ottogi New Sugar Powder 60g (590 won / ~$0.40).

Even the 11 items above 30,000 won follow the same pattern. Diapers 80-count, coffee mix 320-sticks, rice 10kg, ramen 40-packs — not luxury goods, just large quantities of everyday consumables.

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Coffee in Korea Comes in a Stick

After water, the biggest beverage category was coffee (14 SKUs), of which 10 were stick-type instant coffee mixes. Maxim Mocha Gold, French Cafe, Kanu, Vietnam”s G7 — the only whole-bean option was a single 500g bag.

☕ Per-stick cost of 10 instant coffee products

Product	Price	Sticks	Per stick
French Cafe Cafe Mix Mild	38,250 won (~$26.21)	300	128 won
Maxim Mocha Gold Mild (2-pack)	46,880 won (~$32.12)	320	147 won
Maxim Mocha Gold Mild	23,600 won (~$16.17)	160	148 won
Maxim Mocha Gold Mild	39,250 won (~$26.89)	250	157 won
Maxim Mocha Gold Mild	16,280 won (~$11.16)	100	163 won
G7 Pure Black Coffee Mix	36,170 won (~$24.78)	200	181 won
Maxim Supreme Gold	24,960 won (~$17.10)	130	192 won
Maxim Decaf	20,680 won (~$14.17)	100	207 won
G7 Black Coffee	20,810 won (~$14.26)	100	208 won
Kanu Decaf Americano Mini	25,220 won (~$17.28)	120	210 won

The median cost per stick is 172 won (~$0.12). Compare that to 4,500-5,000 won for a single Americano at a Seoul cafe — that”s 26-29x the price.

Now you know why Korean office break rooms and home cupboards are stacked with coffee mix boxes. Maxim Mocha Gold 100-pack alone has 687,000 reviews — 5th highest on this entire list.

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July-Only Items on the List

A sales-volume snapshot reveals the season in which it was taken. On the July 29, 2026 list, summer products accounted for 22 items.

A winter snapshot would fill these slots with hand warmers, humidifiers, and electric blankets. If you”re citing any numbers from this article, remember: this is a late-July 2026 snapshot.

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Can You Trust a 60% Discount?

Out of 188 items, 110 (58.5%) carried a discount badge. The median discount rate was 35%, and 23 items showed 50% or higher (20.9% of discounted products).

🏷️ Discount distribution (110 items with discount badges)

Discount Rate	SKUs
0-9%	14
10-29%	31
30-49%	42
50%+	23

If over half the products carry discounts as a permanent feature, those aren”t discounts — they”re part of the pricing strategy. I reached the same conclusion when analyzing 36 ganjang-gejang products online: the per-100g price of items with 50%+ discounts was actually cheaper than items with sub-20% discounts. Deep markdowns are a sales tactic for budget lines, while premium products simply don”t discount.

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Coupang''s Private Labels Claim 12% of the List

Of the top 165 unique product pages, 20 (12.1%) were Coupang”s own brands: Tamsa (water, household), Comet (kitchen, office supplies), Gomgom (food), and Homeplanet (electronics, batteries).

🏷️ Top-ranking Coupang private label products (by rank)

Rank	Product	Price	Per unit
#3	Tamsa mineral water (label-free) 2L x 36	15,990 won (~$10.96)	22 won/100ml
#16	Tamsa pet training pads 100-count	6,190 won (~$4.24)	62 won each
#36	Tamsa copy paper 80g A4 500 sheets	5,190 won (~$3.56)	104 won/10 sheets
#41	Comet bamboo chopsticks 100-pair x 2	3,820 won (~$2.62)	19 won each
#74	Homeplanet alkaline AAA 20-pack	5,390 won (~$3.69)	270 won each
#134	Comet sink strainer 500-pack	7,140 won (~$4.89)	14 won each
#139	Tamsa unprinted paper cups 185ml 1000-pack	13,490 won (~$9.24)	13 won each
#164	Gomgom ice 3kg x 2 bags	7,350 won (~$5.04)	12 won/10g

The pattern is clear: private labels dominate only where brand doesn”t matter. Water, paper cups, sink strainers, A4 paper, batteries. In categories where taste and brand loyalty matter — ramen, coffee, milk — Coupang”s own brands barely appear in the top 188 (just one Gomgom milk product).

Same batteries: Duracell AAA costs 695 won each vs. Homeplanet AAA at 270 won — a 2.6x difference. Yet Duracell ranks #20 while Homeplanet sits at #74, showing the brand still leads. This means Korean consumers have a clear mental line for each product category about “how far down the private label chain they”re willing to go.”

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No Labels — 18 Out of 19 Water Products

Scanning the list, one word keeps catching the eye: label-free (무라벨, murabel). Of the 19 water SKUs, 18 carried “label-free” or “labeled” in their product name.

Label-free means the PET bottle has no plastic wrap-around label. South Korea has been pushing label-free bottled water since 2021 to improve recycling rates, and within five years, the top online sellers have almost completely switched over.

This matters for travelers too. If that bottle of water you bought at a Korean convenience store has no label and you can”t tell the brand — that”s not a defect, it”s normal. The brand name is embossed on the cap or bottle body.

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How Travelers Can Use This Data

Let”s be honest: most items on this list are things you can”t or shouldn”t buy as a traveler. A 40-pack of ramen and 1,000 paper cups won”t fit in your hotel room, and Coupang has account and payment hurdles for foreign visitors (here”s my guide on which apps work for travelers).

The real value of this table is as a price baseline.

🧯 Price baselines you can actually use during your trip

Item	Online unit price (measured)	How to use this while traveling
Bottled water	265 won/L for 2L packs ($0.18)	Buying a 6-pack at the supermarket is way cheaper than individual bottles at convenience stores
Coffee mix	128-210 won per stick (median 172 won)	The best value souvenir. A 100-pack costs 16,280 won (~$11.16)
Ramen	Shin Ramyun 40-pack: 29,820 won = 746 won per pack (~$0.51)	Full per-pack price breakdown in a separate article
Batteries	Alkaline AAA: 270-695 won each (~$0.19-0.48)	Up to 2.6x difference depending on brand
Instant rice	Hatbahn 210g x 36: 37,900 won = 1,053 won each (~$0.72)	Compare with convenience store prices to see the convenience premium

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What the Sales Volume Tells Us About Korea

By transaction value, Korean e-commerce looks like a market for food delivery and travel products. But by sales volume, it”s a market for water, coffee, ramen, and insecticide.

There”s nothing glamorous on this list. From #1 to #188, every single item is something you use up and buy again. The reason Korea has one of the highest e-commerce penetration rates in the world isn”t because people buy special things online — it”s because they buy the most ordinary things online. Even water.