Its beceause i sell tea (a bag is 50 grams) i can fit about 4 in the largest “brievenbuspakketje” which costs €4,10. If they buy more than 4 (sorry I said 6 in the text above) it has to change to a larger package and that costs €6,15 to send. Do you understand what i mean?
It simply doenst fit in the smaller box if its more of the same item. but shipping is more expensive.