If using a Credit Card THRU Paypal it isnt risky at all Provided if something goes wrong you contact your CC company and NOT Paypal. Your CC Company has your back completely. Paypal is trying to please 2 people at the same time and doesnt have your best interest at heart. They also "Investigate" everything which takes a LONG time whereas your CC Company will (Should) Credit your account IMMEDIATELY once the claim is made.
Your CC Company has legal precedence over any transaction using a Credit Card. Once you open up a dispute with your CC Company PAYPAL can do NOTHING. Paypal will send you an email stating something to the effect that a dispute was opened with the CC Company and they cant do anything further. So the lesson to be learned is when using Paypal ALWAYS use a Credit Card and always contact your CC company if something goes wrong.