This might well be the creepiest #Google page ever: All the purchases a user has ever done. If the user receives a confirmation email for a purchase they made, the user is not notified that Google collected and displays this piece of information in this page. There is no explanation why they are collecting all the purchases in one page, and apparently there is no way to opt out of this or even delete the purchases from the list.
@lerk No idea, but you are not the only one who told me that. From what I gathered from my experience and what other people said, purchases from Amazon, Steam, Threadless, Etsy, Barnes & Noble, and Walgreens may show up in there. PayPal receipts apparently don't.
I don't have any extra information about that. I wonder if there are settings that actually prevent the purchase page from being populated – if so, they are not clearly marked.
I tried it with an older account and some GooglePlay purchases (in-app stuff and subscriptions) show up there.
But again far from all that inbox detected