If you're sourcing from China or any overseas factory for the first time, here are the 3 mistakes that drain the most money from first-time importers — all avoidable if you know what to look for.

1. "Factory" that's actually a trading company

Ask for their business license and cross-check the registered scope of business. A real factory's license will show manufacturing categories. If they dodge a video call of the production floor, that's your answer. Trading companies aren't inherently bad — they can be useful for MOQ flexibility — but you need to know which one you're dealing with so you're not paying factory-direct prices for a middleman markup.

2. Sample quality ≠ bulk quality

The sample is hand-picked and often made by their best technician. Bulk production runs are made fast, by whoever's on the line that week, using whatever raw material batch they have. Always request a pre-shipment inspection before you approve final payment on a bulk order — even a $150 third-party inspection can save you from a $8,000 container of rejects.

3. Vague or shifting payment terms

If a supplier keeps changing the deposit percentage, pushes for 100% upfront, or refuses any form of milestone-based payment (e.g., 30% deposit / 70% before shipment), that's a trust signal, not a pricing detail. Standard is usually 30/70 or 30/40/30 depending on order size. Suppliers confident in their own delivery timeline don't need 100% upfront.

The pattern behind all three: the biggest sourcing losses aren't from bad products — they're from skipping verification steps because you're excited to move fast. Slow down on verification, move fast on everything else.

What's the worst sourcing mistake you've made (or almost made)? Drop it below — helps everyone else avoid it too.