Android Pay is a feature that is becoming more and more popular all over the world and people are increasingly using it instead of paying with a credit card. We have reported more than a month ago that Android Pay is planning to collaborate with PayPal, one of the more popular payment systems, but now firm released official statement which confirms this information.
If users want to use payment option via PayPal they must select the appropriate option in the settings. At this moment payment by PayPal is only available in the United States and it's unknown when this alternative will be extended to other countries.