Shipping costs oddly high

Pretty object fulfilling its function: to protect its essential oil bottles (15ml) and transport by minimizing the risk of leakage.
Flat on delivery parcel received very quickly but the delivery expenses oddly doubled between my order and delivery: 14 Euros (which is almost the price of the object itself!) Instead of 5 Euros initially indicated. The "light" price changes between setting basket, order and delivery are sometimes a mystery, even on such a reliable site that Amazon: damage.