Online retail giants Temu and Shein have added "import charges" to U.S. orders, and Amazon mulled tariff pricing in its bargain section. What to know.

China-based e-commerce vendors Shein and Temu have passed tariff costs along to their customers ahead of President Trump's tariff policies going into effect on Friday. Why it matters: These increases could make the low-cost items unaffordable to American consumers.