Personally I don't think it is wise to sell things to overseas buyers. Too much trouble.

If for some reasons, you want to sell things to overseas buyer, I like to suggest that you get the buyer to
arrange a local friend or relative to collect the items from you. His friend/relative should do the packing and shipping
for him, not you . Make sure the person who come for the collection do a thorough check on all the items.
Take many photos of the items, from different view. If possible, take videos to show that your items are in working