Your container clears Los Angeles, and three days later the email lands: a broker invoice for a few thousand dollars you never budgeted. I’ve watched that exact moment kill more first-year import businesses than bad products ever did. The unit price was great. The freight was booked. That 40% margin looked bulletproof on paper. What was missing, almost every time, was anyone working out the custom fees China to USA properly. Honestly, sourcing is the easy half of this job. Understanding the