You are saying middleman doing quality control deserves 400% markup. I can easily imagine middleman who adds 25% markup to find $8 high quality bikini for total

You are saying middleman doing quality control deserves 400% markup. I can easily imagine middleman who adds 25% markup to find $8 high quality bikini for total cost of $10 to consumer instead of $40 to consumer. The core problem is rather huge currency imbalance. Anything done in US, including quality assurance, is hugely expensive. The Gap has to pay massive executive and retail employee salaries in dollars and have stores with rent in dollars. The currency imbalance benefits merchants on one side and consumers on other side.