Apple.com shoppers in the U.S. and the U.K. have a new way to pay for the latest iPhone or iPad: PayPal. Previously available as a payment option only in Apple’s app and content stores, PayPal is now accepted at the company’s online retail store as well. Good news for PayPal, since Apple is the second largest online retailer in the U.S., according to Internet Retailer. Apple is also promoting the PayPal Credit payment method, which allows shoppers to pay for an item in equal monthly installments over up to 18 months with no interest.