Yemen does not have a "de minimis value", so your total US purchase value will be subjected for duties and taxes.
Ship7 offers shipping services that do not include duties, taxes & customs processing fees. Ship7 members will be responsible for paying any charges, including those that are due when your packages are delivered. Meanwhile, we are constantly working on providing our members DDP (Delivered Duties Paid) services for certain countries (where country’s customs processing systems are automated and have pre-set rules for calculations). When selecting shipping options on Order Checkout page, please check whether your shipping service is a DDP service or not.
The cost of a shipment can be affected by the amount of space that it occupies on an aircraft, rather than the actual weight. This is the volumetric (or dimensional) weight.
If dimensions are in Inches
L x W x H / 139
If dimensions are in Centimeters
L x W x H / 5000