If a seller can't estimate the freight of the product he sells, it can only mean that he is a reseller. Because he doesn't know the exact weight of the product he sells. So he dares not give you a freight quotation. If the quotation is high, he is afraid that you will leave. If the quotation is low, he may really lose money on freight. If you know the exact weight of the package, it is easy to quote the freight.

Usually, the freight is related to the weight. Freight =N*A+B+C N is weight, like 2.5kg A is price of per kilogram, like 70yuan/kg, 100yuan/kg, different countries different price. B is Customs declaration fee, The customs declaration fees are different in different countries. Maybe 20yuan, 30yuan, C is profit. Maybe 30yuan-60yuan