^^ Paypal is a lot more safe than cash. They could just say they never had the cash, paypal has proof of payment.
eBay & paypal have strict rules on refunds, there has to be a reason for the refund agreed between buyer and seller,before money is refunded.Once you have paid someone by Paypal you can not reclaim the cash unless the seller agrees to do the refund or Paypal make the refund due to a problem. Paypal will ALWAYS contact both buyer and seller first and give you a chance to sort out a problem.