On a shelf that is 39% bundles, 1+1 is not a discount
Across the 42 Olive Young categories we track daily, 483 of the 1,239 top-30 listings carry bundle or set marking — 39.0%. Yet in sunscreen the median bundle price sits just 1.2% above the median single. Who absorbs the second unit is the real question behind a 1+1.
In the Olive Young ranking data we collect daily (as of 5 October 2026, 42 categories × top 30 = 1,239 listings), 483 listings carry bundle or set marking — 39.0%. Refill marking appears on 45 (3.6%); 1+1, two-pack and double marking on 112 (9.0%). The median bundle sells at ₩22,600 against ₩18,950 for singles, a gap of only 19.3%. Twice the quantity, 1.2 times the price — the second unit is not paid for at retail. By category the spread is sharper. Sunscreen is 53% bundles but the bundle-to-single median gap is 1.2%, and sheet masks 0%. Pads run +40.0% and lip makeup +53.8%. In a published unit-cost model, primary packaging is about 11% of landed cost, secondary packaging about 4.5%, and fill about 23%, with fill cost per unit dropping 40–60% as MOQ scales. Separating the lines that double from the lines that do not is what makes a bundle work.
Bundles are not the exception on this shelf — they are the baseline
Buyers new to the Korean shelf read 1+1 and set formats as promotional activity. The numbers say otherwise. In the Olive Young ranking data we collect daily (as of 5 October 2026, drawn from a 72-day window running 16 July to 5 October), 483 of the 1,239 listings across 42 categories × top 30 carry bundle or set marking — 39.0%.
New entries make the point sharper. Of the products that newly took a category #1 position that day, all 8 were set formats. Among the 10 products that held a top-20 place for 62 days or more, 8 were bundles. Products arrive as bundles and survive as bundles.
Breaking the marking down, 112 listings (9.0%) are 1+1, two-pack, double or duo; 45 (3.6%) carry refill marking. The rest pair a product with a gift item or a different SKU. One word covers several quite different designs, and each one touches unit cost in a different place.
Some bundles raise the price and some do not
This is where the reading most often goes wrong. Taken as a whole, the median bundle sells at ₩22,600 and the median single at ₩18,950 — twice the quantity for a 19.3% price gap.
Within categories the spread widens considerably. The table below shows bundle share and how far the median bundle price sits above the median single price inside the same category, on the same date.
| Category | Bundle share | Median bundle | Median single | Gap |
|---|---|---|---|---|
| Cream | 73% | ₩27,180 | ₩25,450 | +6.8% |
| Pad | 63% | ₩25,900 | ₩18,500 | +40.0% |
| Essence / serum / ampoule | 57% | ₩24,900 | ₩20,800 | +19.7% |
| Cleansing foam / gel | 57% | ₩19,900 | ₩15,000 | +32.7% |
| Sunscreen | 53% | ₩21,700 | ₩21,450 | +1.2% |
| Toner | 40% | ₩20,400 | ₩19,750 | +3.3% |
| Sheet mask | 37% | ₩15,000 | ₩15,000 | 0% |
| Lip makeup | 17% | ₩18,300 | ₩11,900 | +53.8% |
Read the sunscreen row carefully. Bundle share is 53%, yet the price gap is 1.2%. Sheet masks show no gap at all. In these categories a bundle is not a pricing device — it is a way to hand over more volume inside the same price band. Retail does not pay for the second unit, so manufacturing has to absorb it.
The other side exists too. Pads at 40.0%, cleansing foams at 32.7% and lip makeup at 53.8% are categories where the bundle does raise the price. The same 1+1 produces opposite financial outcomes depending on where it lands. Checking which side a target category sits on belongs before the format decision, not after. The daily ingredient signal shows the category direction; this question is what you attach to it.
Only three lines double in a 1+1
Pricing a bundle as "twice the cost" overstates it in almost every case. Unit cost is made of lines with different behaviour, and a second unit does not move them equally.
A published unit-economics model gives a $19.85 landed cost: $2.20 for primary packaging (glass plus pump, about 11%), $0.90 for secondary packaging (carton and insert, about 4.5%) and $4.50 for formula fill (about 23%). Adding a second unit splits that structure as follows.
| Cost line | In a 1+1 | Share (sample model) |
|---|---|---|
| Formula · fill | roughly doubles | about 23% |
| Primary container · pump | roughly doubles | about 11% |
| Secondary packaging (carton) | one carton for two does not scale per unit | about 4.5% |
| Design · tooling | unchanged | varies |
| Stability · clinical testing · certification | unchanged | varies |
The lower two rows carry the argument. Testing, certification and tooling happen once whether or not the product ships as a bundle, and as volume rises those fixed costs fall on a per-unit basis. So the true increase from bundling lands well below double, with a range that depends on the product's own structure.
That changes one thing about the quote you ask for. Rather than requesting a total for the 1+1, ask for those five lines listed separately — then two quotes become comparable. The product planner is a faster place to frame the structure and the per-unit numbers side by side.
A refill is a design that erases the primary-container line
The line with the most room to move on a second unit is primary packaging — roughly 11% of cost in the sample model.
Published figures put an 8 oz refill pouch at 6–10 grams against 60–80 grams for a conventional shampoo bottle of the same volume, an 85–90% reduction in plastic per unit. Transport-stage carbon for equivalent product volume comes in 30–40% lower. Sending the second unit as a pouch rather than a bottle effectively removes that line from the sheet.
It is not free. Pouches require their own tooling and fill line, and they add a decanting step for the consumer. In our data refill marking covers 45 of 1,239 listings — 3.6%, against 39.0% for bundles overall. The mainstream Korean format is still 1+1, not refill. Moving to refill is a question about equipment and the use step, not about demand.
Set the MOQ, then set the format
The economics of a bundle are largely decided at MOQ. Published cost figures show fill cost per unit falling 40–60% as volumes move from small to mid-tier MOQs, and testing cost per unit dropping to roughly a third when a run goes from 1,000 to 3,000 units.
A 1+1 asks for twice the production volume to produce the same revenue. For a brand already carrying a mid-tier MOQ, that demand pushes unit costs down rather than up. For a brand at a small MOQ, the second unit arrives at full cost — and in a category like sunscreen or sheet masks, where retail barely rises, margin breaks before scale can help.
Which makes the order matter. Decide the format first and the MOQ tends to be set by a volume you cannot reach. Decide the MOQ first, work out whether that volume can carry a second unit, and the format decision has a basis — including the decision to go onto a 39%-bundle shelf as a single.
Takeaways
- In our collection, 483 of 1,239 top-30 listings across 42 Olive Young categories (39.0%) are bundle or set formats. All 8 new category-#1 entries and 8 of the 10 products holding top 20 for 62-plus days were bundles.
- The median bundle sells at ₩22,600 against ₩18,950 for singles — a 19.3% gap. Categories split between almost no premium (sunscreen +1.2%, sheet masks 0%) and a real one (pads +40.0%, lip makeup +53.8%).
- Formula, fill and primary packaging roughly double in a 1+1; testing, certification and tooling do not move. Quotes have to arrive line by line to be comparable.
- A refill erases the primary-container line (about 11% in the sample model), but refill marking is still only 3.6% of what we track.
*Sources: Olive Young ranking data we collect daily — 1,239 listings across 42 categories × top 30, 483 bundles (39.0%), 45 refill (3.6%), 112 1+1/two-pack/double (9.0%), median bundle ₩22,600 vs single ₩18,950, plus per-category share and medians. As of 5 October 2026 (collection window 16 July – 5 October, 72 days), aggregated 6 October 2026 / Made by Genie, "Cosmetic Manufacturing Costs: Unit Economics Breakdown" — $19.85 sample landed cost with $2.20 primary packaging, $0.90 secondary packaging, $4.50 formula fill; fill cost per unit down 40–60% with MOQ scale; testing per unit cut to a third from 1,000 to 3,000 units / Zacros America, "Sustainable Beauty Packaging Solutions" — 8 oz refill pouch at 6–10 g vs 60–80 g conventional bottle, 85–90% plastic reduction, 30–40% lower transport carbon. External sources checked 7 October 2026.*
Questions people ask
They are close to the default. In the Olive Young ranking data we collect daily (as of 5 October 2026), 483 of the 1,239 listings across 42 categories × top 30 carry bundle or set marking — 39.0%. The category spread is wide: skincare sets are 28 of 30 (93%), creams 22 (73%) and pads 19 (63%), while nose packs and lip makeup are 5 each (17%). Of the products newly entering a category #1 spot that day, all 8 were set formats, and 8 of the 10 products that held a top-20 place for 62 days or more were bundles. Bundles are how products enter the shelf and how they stay on it.
Less than most buyers assume. On the same date the median bundle price was ₩22,600 and the median single ₩18,950 — a 19.3% gap for roughly twice the quantity. By category it narrows further: sunscreen shows a 1.2% gap, sheet masks 0%, toners 3.3% and creams 6.8%. In those categories a bundle is not a pricing lever but a way to give more volume inside the same price band. The opposite also exists: pads sit 40.0% higher, cleansing foams and gels 32.7%, and lip makeup 53.8%. The same phrase produces opposite financial effects depending on where the product lands, so the category comes before the format decision.
No — some lines double and some do not move at all. A published unit-economics model shows a $19.85 landed cost made up of $2.20 primary packaging (glass plus pump, about 11%), $0.90 secondary packaging (carton and insert, about 4.5%) and $4.50 formula fill (about 23%). Adding a second unit roughly doubles formula, primary packaging and fill. Design, tooling, stability and clinical testing, and certification do not change at all, and a carton holding two units does not scale one-for-one either. So the real increase is well below double and varies by product, which is why a quote should list these lines separately rather than give one bundle total.
It turns on the second unit's container. Published figures put an 8 oz refill pouch at 6–10 grams against 60–80 grams for a conventional shampoo bottle of the same volume — an 85–90% reduction in plastic per unit, with transport-stage carbon 30–40% lower for equivalent product volume. Where primary packaging is roughly 10% of unit cost, sending the second unit as a pouch nearly erases that line. The cost is elsewhere: pouches need their own tooling and fill line, and the consumer has to decant. In our data refill marking appears on only 45 of 1,239 listings, 3.6%, against 39.0% for bundles overall. The Korean shelf still runs on 1+1, not refills.
It should come first. Published cost figures show fill cost per unit dropping 40–60% as volumes move from small to mid-tier MOQs, and testing cost per unit falling to roughly a third when a run goes from 1,000 to 3,000 units. A 1+1 demands twice the production volume for the same revenue, so a brand already at mid-tier MOQ gets those effects working in its favour. A brand at a small MOQ takes the second unit's cost at full price, and in a category where retail barely rises — sunscreen or sheet masks — margin breaks before volume helps. Setting MOQ first and then deciding the format is the safer order.