Can't see any problem dealing with Ebay and PayPal in tandem. Okay, so it's a wealthy combine raking in money by the cartload, but so what? It's a simple process, and if your sale or purchase goes smoothly you are getting a virtually risk-free service at very reasonable cost.   

I do sell on Ebay although most of my transactions are purchases, some of them such as Land Rovers, Diggers, etc being for fairly large sums.

Of two bad deals, when fraudulent sellers took my money and then vanished, PayPal refunded my outlay for the first as I had paid via them. The second, where the seller insisted on payment by personal cheque, cost me a tidy sum with no possibility of ever seeing the paid-for item.

The lesson was simple;use PayPal when buying via Ebay.

To see Ebay & PayPal in perspective, just think back to how cumbersome the process of buying and selling across the globe used to be in the days before the Internet.