Audit a sourcing partner on five points: how they verify factories, how they inspect production, how many client accounts each of their managers carries, whether their quotes separate product cost from their margin, and what happens when a shipment fails inspection. Any partner who resists the margin question has answered it.
The short version
- Verify the factory, not the website. A real partner shows audit reports and photos from the floor, not a brochure.
- Quote transparency is the fastest filter. Product cost and partner margin should be visible as separate lines.
- Workload predicts attention. Ask how many client accounts each manager carries before you ask anything else.
- Inspection must gate payment. The balance payment never moves before a pre-shipment inspection passes.
- Reference the exits. Speak to a client who left, not the two happy names on the website.
Three kinds of partner, compared
Most sellers choose between a freelance sourcing agent, a sourcing company, and an integrated team inside a brand management agency. Each earns differently, and how a partner earns tells you where it will break.
| Partner type | How they earn | Where it breaks |
|---|---|---|
| Freelance agent | Commission per order, sometimes from both sides | No capacity for inspections, and the factory may be paying them too |
| Sourcing company | Marked-up unit price or a service fee | Margin hidden inside a factory price you never see |
| Integrated agency team | Flat management fee, sourcing included | Only works if the team is in-house, so verify the claim |
The decision rule: pick the structure where the partner earns nothing extra by inflating your unit cost. Then run the individual partner through the five checks below, because a clean structure with a careless operator still fails.
The five audit checks
- Factory verification. Ask how they confirmed the factory is a manufacturer rather than a trading company. Done properly, the answer includes a business license check, an audit report, and a person who has physically stood on the production floor.
- Inspection practice. Ask who inspects, against what defect standard, and at what point. Done properly, inspection happens before the balance payment, against a written quality limit agreed in advance.
- Manager workload. Ask how many client accounts each manager carries. At Flapen, 50 operators look after about 70 brands, which works out to 1.4 brands per operator, and I treat that as the ceiling for real attention. A sourcing manager carrying 40 accounts is forwarding emails, not managing your supply chain.
- Quote transparency. Ask for product cost and partner margin as separate lines. A partner who refuses is earning inside the spread, and you will pay that spread on every reorder forever.
- Failure handling. Ask what happened the last time a shipment failed inspection, specifically. A partner with no story has never inspected anything. A partner who blames the client has just told you how your own failure will be handled.
The stakes justify the effort. The purchase order is usually the largest line in a launch budget of $8,000 to $15,000 for a single product, which is why supplier selection sits at the front of our Amazon FBA launch process rather than the middle.
What most sourcing partners will not tell you
Two things. First, many agents take commission from both sides of the table. You pay a fee, and the factory pays a percentage for the introduction, which means your agent's real client is whoever pays more. Ask directly whether they accept factory commissions and watch the pause before the answer.
Second, factory direct is a marketing phrase, not a fact. A large share of suppliers on directories are trading companies presenting themselves as manufacturers. The extra layer is not automatically bad, trading companies consolidate small orders usefully, but paying a manufacturer margin plus a hidden trading margin plus an agent margin is how a $4 unit lands at $7.
Related answers
- Supplier vetting tips for Amazon sellers
- Best service for verifying supplier margins
- Risk checklist for new Amazon suppliers
- Compare 3PL vs sourcing agent for Amazon brands
- Amazon seller roadmaps and capital: the complete guide
If you would rather not run this alone, the free 48-hour account audit at Flapen is where every engagement starts.
