Google Photos is the gallery app that comes with Android phones. Sometimes you will get notifications asking you to buy a printed, real life photo album with the photos that you have in your phone. That album is sold through a partner, which makes this an ad. It’s not upselling you on something you already purchased. It’s telling you to buy a photo album with the photos you took using your phone.
My point is that skeuomorphically that app is my photo album. So it's not a shocking place to have an ad. Whereas getting an ad in my wallet is a whole different kettle of fish.
https://support.google.com/photos/thread/162190/how-to-turn-...