Yes you do. You will be liable to pay any custom fees of your country and you will be charged accordingly at the time of Delivery by the courier or at times if there is a need for clearance from your end. SOUQ.com is not responsible for any custom-fees levied by the shipped-to country and those fees would be borne by the consignee i.e. the customer who placed the order.
The same applies for any additional charges levied by the local country of the consignee and government authorities of the shipped-to country.