Here is a topic that needs to be addressed; Paypal's protection policy rules and international customs laws. These 2 rules are something that needs to be addressed by ebay and paypal's rule makers for sellers who sell jewelry, watches and coins.
According to international customs laws, jewelry, watches, coins and other high value items may only be shipped via insured priority mail or registered mail. Any other ways of shipping constitutes a violation of international customs laws and are prone to confiscation by the governing customs office.

99.9 percent of all countries customs laws clearly prohibit these items from being mailed via express mail which is the only method accepted by paypal’s seller protection rules. According to paypal’s seller protection rules, the seller MUST ship via a method that can be tracked online.  The only methods this can be is shipping via some type of express service. Any other method of shipping does not give paypal’s seller protection department any way of tracking the shipment.
Paypal’s seller protection policy and international customs laws are in conflict with each other. If you ship to meet international customs laws, you as seller are at risk of losing your payment back to the buyer for not being able to provide a tracking number to paypal. If you ship to meet paypal’s seller protection rules, you are at risk losing the item to the customs office of that country you have mailed the package to. Once you lose the item to the customs office, you will lose your payment due to non delivery to the buyer.
This sounds more complicated than it really is. Just remember, you are at risk for accepting paypal for high value items and not sending it via registered mail. Both ebay and paypal needs to review all customs laws for shipping before they write rules which conflict with international laws.