Yes it is true Ebay gives us access to a great marketplace and Paypal is one of the most secure payment options there is.
BUT beware, when Paypal commences their incompetancy run, you will lose a lot of trade and good reputation.
If you have a problem with Actual Paypal (not buyer's or seller's transactions) go directly to the blogs of Ebay and Ebay Customer Support, because Paypal will cover their mistakes in a grand fashion style.
If you want to continue to have the quickest safest transactions, you must hold Ebay responsible for Paypal's actions. NO Excuses!!!