Your product idea looks great on paper. Then you price it with a domestic supplier and the margin dies. I’ve been there. Over the past several years I’ve built multiple six-figure Amazon brands by sourcing from China, and the math is the whole reason. Cost savings of 50-80% sound like hype until you run your own numbers. For me, they’re the foundation of a viable FBA business.

What follows is the exact framework I use, from picking a product to getting cartons into an Amazon warehouse. No fluff.

The Core Advantage: Why China for FBA?

Roughly 70% of successful Amazon sellers source from China. That’s not a coincidence. The numbers just work. My personal rule: manufacturing cost should land at 20-30% of the final selling price. That gap is what pays for PPC, covers FBA fees, and still leaves profit at the end.

Categories that have treated me well: home & kitchen, beauty and personal care, electronics accessories, pet supplies, and sports gear. Most of these products are small to medium sized, which keeps FBA fees manageable, and they take private label branding nicely.

Step 1: Finding a Winner (Product Selection)

I don’t trust gut feeling here. Data decides.

Tools I rely on:

  • Jungle Scout and Helium 10 for estimating monthly sales revenue on a given listing.
  • Keepa for price history and sales rank trends. A stable or rising rank is a healthy sign.

My filters:

  • Selling price of $20-$50. That range usually leaves enough room for profit after FBA fees.
  • Size and weight. I stick to items that fit a small to standard shipping box. Stay out of the oversize FBA fee tier. It will eat you alive.
  • Fewer than 100-150 reviews on competing listings. Still competitive, but winnable.
  • Minimum 30% net profit after all fees, proven in the FBA Revenue Calculator. I run this before I ever contact a supplier. Hard rule.

Some things get an instant no: fragile items, anything requiring complex compliance (electronics that need FDA or FCC approval, for example), and heavily seasonal products unless I already have a solid plan for the inventory risk.

Step 2: Where to Find Suppliers (And How I Choose)

I’ve used every channel out there. Here’s my honest take, warts included.

  • A sourcing agent: my default for new product lines. A good one who specializes in FBA handles the details that trip up newcomers: FNSKU labeling, proper poly bagging, and direct-to-FBA shipping. They vet factories and negotiate on volume, which saves more than their fee costs in my experience. Their commission does shave your margin a bit, though, so bake that into your pricing.
  • Alibaba: useful for early research on market prices and MOQs. Stay skeptical of everyone there. Verification is your job, and I’ve run into plenty of trading companies masquerading as factories.
  • 1688.com: this is where the real manufacturing prices live, typically 20-40% cheaper than Alibaba listings. The catch is real too. It’s all in Chinese, and without a local agent or partner you’ll get lost fast. Honestly, it frustrated me for months before I had help on the ground.
  • Canton Fair: worth attending once to see products in person and build relationships. Just know it’s exhausting, expensive, and easy to burn a whole week with little to show for it if you show up unprepared.

How I evaluate a factory:

  • Sample quality is non-negotiable. I order samples, abuse them, and compare everything against the spec sheet. They aren’t free and the wait gets annoying, but if a unit fails in the hand, I walk.
  • Verify their FBA experience. Straight question: “How many shipments have you sent to Amazon fulfillment centers?” Then I ask for references. Hesitation tells you something.
  • Factory audit. I visit in person or have my agent do a basic one. Clean, organized production lines matter more to me than a framed business license.

Step 3: The Role of a Sourcing Agent for FBA

I treat my agent as my ops team on the ground. Their real value hides in the details that prevent expensive mistakes.

Pre-production: they handle supplier verification, push the price down to fit my target margins, and negotiate payment terms that protect my cash flow.

During production: they run quality control. That means approving the first production sample, checking mid-run (DPI), and inspecting finished goods before they ship (PSI). The PSI is the one I never skip. It catches defects and incorrect packaging that would get your inventory rejected at the Amazon dock. Yes, it adds a small cost and a few days. That’s still cheaper than a stranded shipment.

FBA prep is where their expertise really pays off. Every unit has to match Amazon’s system exactly:

  • FNSKU barcodes applied correctly.
  • Compliant poly bags with suffocation warnings.
  • Bundles or multi-packs assembled properly.
  • Cartons labeled with FBA box labels, with contents matching the shipping plan.

Logistics comes last. They coordinate the entire freight forwarding process by sea or air, handle customs documentation, create the shipping plan in Seller Central, and arrange final mile delivery into the designated Amazon warehouse. Shipping direct removes extra handling, and less handling means less transit damage.

Put this whole chain together, product selection through FBA delivery, and sourcing stops being a hopeful gamble. It becomes a process you can repeat.