Here is a refined and professional version of the "Pre-owned" condition statement for your listings:

Condition: Pre-owned
This item has been previously used and may show minor signs of cosmetic wear.
It is fully functional and operates as intended. It may have been a store return or floor model.

We accept eBay managed payment.

Shipping is FedEx or DHL or JAPAN POST.

* Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. 
* Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying.
* These charges are normally collected by the delivering freight (shipping) company or when you pick the item up - do not confuse them for additional shipping charges.  
* We do not mark merchandise values below value or mark items as "gifts" - US and International government regulations prohibit such behavior.