PayPal: More Security, More Sales. PayPal revolutionized digital payments by putting people at the center. Millions of people around the world already pay simply, quickly, and securely with PayPal. Merchants increase their sales by an average of 23.1%* with PayPal and are well protected thanks to PayPal Seller Protection. And with the new PayPal PLUS, merchants can now also offer their customers a one-stop solution with the four most popular payment methods.