DG·Field Notes

From the seller floor.

Field reports on the SEA marketplace landscape — its fragmentation, its competitive arithmetic, and the operating complexity it pushes onto sellers every day. Written for the operators we build for. No benchmarks. No listicles. Real moves, real math.

Issue · 01 — 2026

Filings: 27
Latest: May 8
Cadence: Bi-weekly
Editor: DataGlass

↳ Cover Story · No. 01

LandscapeMay 4 · 2026

Filed

DataGlass Research22 min

May 4, 2026 / Landscape

Shopee Sellers in 2026: Southeast Asia E-commerce Market Research, GMV & Seller Economics

Market growth has resumed; seller economics have become more exacting. Southeast Asia's platform e-commerce reached US$157.6B in 2025 (up 22.8% YoY), top-three platforms now control about 98.8% of platform GMV, and content commerce accounts for ~32% of platform GMV. The 2026 question for sellers is no longer "how big is the market?" — it is "who controls the decision loop?"

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Recent · Filings

The archive.

In reverse-chronological order. Each filing is the answer to a question we got tired of answering one seller at a time.

From the seller floor.

Shopee Sellers in 2026: Southeast Asia E-commerce Market Research, GMV & Seller Economics

The archive.

How to increase Shopee profit without more sales

How to sell more on Shopee without burning margin

Price elasticity modeling for marketplace sellers — why Shopee, Lazada, and TikTok Shop pricing decisions need it

Shopee optimization in 2026 is a feedback loop, not a checklist

Shopee fee structure and commission calculation in 2026: the six layers, the four-term formula

Cross-platform ad budget allocation for SEA marketplace sellers

How to increase profit on Shopee without just selling more

How to increase profit on Lazada in 2026

How to reduce Shopee ad waste without killing sales

How to calculate Shopee seller margin

How to calculate Lazada seller margin

How to calculate true Shopee ROAS for profit

How to reduce Lazada ad waste

How to find low-margin SKUs on Shopee

How to plan Lazada campaigns around profit

How to increase profit on TikTok Shop in 2026

The SEA marketplace in 2026: a fragmented arena with one survival rule

Data ingestion for Shopee sellers: why zero-setup analytics matters

The race to zero margin — and how Shopee, Lazada, and TikTok Shop got there

ML demand forecasting for e-commerce sellers

Complexity is the new tax on small sellers

Stockout math for e-commerce sellers

Dynamic pricing for marketplace sellers

E-commerce Decision Engine: How Marketplace Sellers Turn Data Into Profit Recommendations

Multi-shop analytics for Shopee, Lazada, and TikTok Shop sellers

Stop guessing. Start deploying.