So cost including shipping is 4198HKD which is approx £435. You’ll pay 2.5% duty on the cost of the item and shipping which would be £10.88. You’d then pay VAT on the cost of the item, The shipping and the duty which would be £89.18. Therefore your total cost would be £535.06. If you were lucky for customs not to charge it then you’d be better off, if they do then you’d be worse off.