between 1 to 5 units are released free of charge randomly. I'd suggest ask some friend to purchase online in US, receive it on US address, detach invoice / packing list and dispatch to PK as GIFT- No Commerical Value. request your friend to mention fright prepaid. Incase of valuation for custom will depend on dispatch charges which ever is high, declared value of item or courier value. - means if carriage value is US$ 75 and declared value of item is US$30. customs will evaluate taxes on GIFT at US$ 75.00.