The bottom line: FBA and FBM serve different purposes
When Korean brands enter Amazon, one of the first operating decisions is whether to choose FBA (Fulfillment by Amazon) or FBM (Fulfillment by Merchant). Neither is universally correct. The choice depends on the brand's product mix, margins, inventory stability, and early operating capability.
FBA strengths
FBA stocks inventory in Amazon warehouses ahead of time and lets Amazon handle most of order processing, shipping, and customer service.
- Eligibility for Prime shipping
- Fast shipping experience
- Higher operations automation
- Higher likelihood of better conversion
- Stronger Buy Box positioning
In markets like the US where shipping-speed expectations are high, FBA tends to be advantageous on conversion. It also helps with review velocity and Buy Box competitiveness.
FBA weaknesses
But FBA is not just about being 'easier.' You have to ship inventory ahead of time, and long-term storage fees, return costs, and disposal risk all factor in.
Be cautious when:
- You have many SKUs with low turnover
- Products have expiration concerns
- Initial demand is hard to forecast
- Margins are thin
- You lack experience with packaging / labeling rules
FBA is powerful — but it only delivers its real strength once you have inventory planning capability.
FBM strengths
FBM is the model where the seller handles order processing and shipping directly. For Korean brands, the early-stage burden tends to be lower.
- No need to pre-stock large volumes
- Flexible SKU testing
- Easier operational control in some categories
- Combinable with your own logistics partner
- Lower over-stock risk
For brands new to Amazon checking which SKUs resonate, FBM can be the more realistic choice.
FBM weaknesses
That said, FBM exposes weaknesses if your logistics capability is limited.
- Weaker shipping lead time
- Limits on Prime visibility
- Higher returns / customer-service load
- Operational standardization is harder
- Slower review and conversion growth
The flexibility of FBM comes with the requirement that the brand owns the customer experience end to end.
HYBRID
In the growth stage, a mix of FBA and FBM is the realistic strategy.
A realistic choice for Korean brands
In practice, the path often looks like this.
1) Early test stage
- FBM or small-scale FBA in parallel
- Confirm response on key SKUs
- Gather demand-forecast data
2) Growth stage
- Move high-converting SKUs to FBA
- Keep slow-turn SKUs on FBM
- Operate a hybrid structure
3) Expansion stage
- Split logistics by country
- Combine FBA + local 3PL + D2C logistics
- Optimize SKU operations by inventory turnover
The right answer is not picking FBA or FBM — it is designing different logistics structures by SKU and by stage.
Common mistakes
Brands often make the following mistakes.
- Sending every SKU to FBA from day one
- Applying the same logistics model to slow-turn SKUs
- Shipping inventory before there is an ad plan
- Underestimating return rates and storage fees
- Making logistics decisions on intuition rather than through the operations team
Stacked over time, these mistakes lead to conclusions like 'FBA is expensive' or 'FBM doesn't work' — but the real issue is usually structural design.
“Logistics choice is not plain operations — it is part of business-model design.”
— ARC Group
How ARC Group approaches it
ARC Group designs logistics strategy by looking at SKU mix, margin, expected sales velocity, ad plan, and per-country operating structure together. Rather than declaring 'FBA is better' or 'FBM wins,' we design which SKUs go to FBA and which go to FBM so that overall profitability improves.
Amazon operations are not only about ads or listings. Logistics structure becomes profit structure. Treat the logistics choice as part of business-model design, not as plain operations.