Quotes are only comparable when you line them up on the same terms. Compare unit price, MOQ, lead time, sampling cost, and landed cost side by side so you are choosing on total cost to your door rather than on the lowest factory price.
The true per-unit cost delivered to you: the factory price plus import duty, freight, customs fees, and any broker charges. It is the only number worth comparing across factories in different countries.
A low unit price can carry a high MOQ, long lead times, expensive sampling, or tariffs that make the landed cost higher than a pricier quote from a closer factory.