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Five research mistakes that quietly drain import budgets — de chasing hype a ignoring landed cost y compliance — y el five-step pre-order framework el RND Sourcing Team uses a fix them.

Twelve mistakes that kill new e-commerce stores — wrong niche, bad images, cost-plus pricing, no email list, early paid ads, over-inventory, y more — each con a concrete fix y a validate-before-you-build rule.

Answer Engine Optimization en 2026: what AI answer engines cite, how a write plain-text FAQ con schema, build authority y E-E-A-T, y make your cornerstone content machine-readable.

Unit Economics 101 para first-time founders: model fully-loaded CAC, estimate LTV de repeat rate, hold a 3:1 ratio, y find your cash-flow break point before you reorder — con a sourcing-agent margin lever.

A repeatable method for mining Reddit for unmet product demand: the exact search syntax, how to read a thread for a real gap, three signals that separate genuine demand from noise, and how to convert verbatim quotes into ad copy and factory specifications.

Eight genuinely free product research sources ranked by signal strength, including el supply-side y Yiwu restock signals that paid tools cannot see, plus a 30-minute weekly routine a work them.

A four-filter product selection framework used en el sourcing side: landed multiple, durable demand, shipping friendliness y video demonstrability, plus a 20-point scorecard y three worked examples.

A Yiwu sourcing team explains new-product-development staged validation: a prototype proves el concept, a sample (including el pre-production PP sample) proves it can be built a spec, y a small batch proves real demand — each stage resolving one uncertainty before el next dollar is spent.