I built Zentria Flow because I kept seeing the same thing: importers price a product off the supplier invoice, then customs hits Section 301, IEEPA, VAT, fees and the real landed cost ends up 30 145% higher. Most duty calculators only show the base rate, so the gap blindsides people at the port.
So I'm curious for those of you who import (China, Vietnam, anywhere):
What's the worst customs/tariff surprise that wrecked a margin?
How do you currently calculate your true landed cost spreadsheet, broker, gut feel?
E-commerce importers lose thousands to unexpected tariff bills — especially now with US-China tariffs at 145%.
Zentria Flow calculates your complete landed cost in 10 seconds: duties, tariffs, VAT, freight, and insurance. Then audits your shipment documents for compliance errors before they become expensive customs problems.
Free to start. 3 calculations/day, no account needed. Covers US, UK, EU and 180+ countries.
