It's up tp the weight and the volumetric weight of your items . after that it may vary up to the destination country and the shipping method you chose. from this link you can reach the shipping prices you won't be asked to pay more than the prices appears in the Shipping pricess.
how to calculate the volumetric weight !?
Length X width X hight / 5000 = !!! Kg
Box with 60 cm length - 40 cm width - 30 cm hight
60 X 40 X 30 /5000 = 14.4 Kg