I do not understand why freight increase more than twice if I buy 1 unit (5pcs) or 4 units (4x5pcs), if is the same very small and not at all heavy parcel (each piece weighs only 2 grams so 20 pcs = only 40 grams. Other sellers in products heavier and bulky do not increase the shipping cost when there are only a few units.
I do not understand why freight increase more than twice if I buy 1 unit (5pcs) or 4 units (4x5pcs), if is the same very small and not at all heavy parcel (each piece weighs only 2 grams so 20 pcs = only 40 grams. Other sellers in products heavier and bulky do not increase the shipping cost when there are only a few units.