2026 updated fees · Open Market + Rocket Growth + VAT + Monthly service fee
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Rocket Growth Cost Deep Dive — The 4-Tier Fulfillment Bill

Rocket Growth is Coupang's fulfillment service. Beyond the standard category commission, sellers pay inbound, outbound, storage, and return fees. Understanding when each line item eats into profit — and when it amplifies it — is essential.

Coupang® is a registered trademark of Coupang Inc. No official affiliation. Estimates only; verify at Coupang Wing.

1. Fee structure

  • Inbound: 600원 / SMALL unit
  • Outbound: 1,800원 / SMALL unit
  • Storage: 120원 / SMALL unit·month
  • Return: 2,000–3,000 KRW / return

2. Rocket Growth vs Self-shipping

Self-shipping: courier 2,800–3,200 + packaging 500 = ~3,500 KRW per unit. Rocket Growth: 600 + 1,800 + 120 = ~2,520 KRW per unit. Rocket wins by ~1,000 KRW on pure cost — plus the Rocket badge boosts CTR/CVR 30–50%.

3. Break-even volume

Break-even units = Fixed inbound cost / (Self-ship cost − Rocket Growth cost)

4. Inventory turnover is everything

Turnover below 1.0 compounds storage fees. Cap initial inbound at 1.5× projected monthly sales.

5. Hidden return costs

  • Inspection: 500–1,000 KRW per return
  • Disposal (perishables): +1,000–2,000 KRW
  • Ranking penalty when return rate exceeds 5%

6. Checklist

  • Avoid Rocket Growth for SKUs under 50 units/month
  • Initial inbound ≤ 1.5× monthly sales forecast
  • Keep return rate under 7%
  • Target turnover ≥ 1.2
  • Maintain ROAS ≥ 600%

FAQ

Q1. How much is the Rocket Growth inbound fee?

About 600 KRW per SMALL unit. MEDIUM ~900 KRW, LARGE ~1,500 KRW. Charged per unit on each inbound shipment.

Q2. How does storage fee accumulate?

Monthly billing at ~120 KRW per SMALL unit. Inventory remaining past month-end incurs the next period's charge, compounding quickly for slow-moving SKUs.

Q3. When is Rocket Growth better than self-shipping?

If monthly units ≥ 50, standard box size, light weight (1–3 kg), and inventory turnover ≥ 1, Rocket Growth usually wins. The Rocket badge boosts CTR/CVR by 30–50%.

Q4. How do returns impact cost?

Each return triggers retrieval, inspection, and either resale or disposal fees — roughly 2,000–3,000 KRW per return. Return rates above 10% erode margins fast.

Q5. What to watch in the first 3 months?

Cap initial inbound at ≤ 1.5× projected monthly sales. Overstock only accrues storage fees. Review weekly and rotate stuck SKUs via promotions.