International buyers are responsible for all customs duties and fees.  eBay rules require shipment with customs label for all purchases requiring declaration (this is $40.01 for most countries).  Tracking and proof of shipment is required for dutiable shipments which has a base cost to the seller, for an eBay label, of $13.99.  For non-dutiable purchases the label cost is $3.49.  Postage for multiple listing purchases will be adjusted in the invoice or after package is delivered to the post office.