Можно, но в приложении про это не должно быть ни пука:
"Apps other than those described in 2(b) may not lead users to a payment method other than Google Play's billing system. This prohibition includes, but is not limited to, leading users to other payment methods via:
An app’s listing in Google Play; In-app promotions related to purchasable content; In-app webviews, buttons, links, messaging, advertisements or other calls to action; and In-app user interface flows, including account creation or sign-up flows, that lead users from an app to a payment method other than Google Play's billing system as part of those flows. "
Соответственно рядовые пользователи не задумываясь будут платить через Google.
А можно для селян - нельзя будет сразу на сайте оплатить подписку что ли? Только через магазин?
Можно, но в приложении про это не должно быть ни пука:
"Apps other than those described in 2(b) may not lead users to a payment method other than Google Play's billing system. This prohibition includes, but is not limited to, leading users to other payment methods via:
An app’s listing in Google Play;
In-app promotions related to purchasable content;
In-app webviews, buttons, links, messaging, advertisements or other calls to action; and
In-app user interface flows, including account creation or sign-up flows, that lead users from an app to a payment method other than Google Play's billing system as part of those flows.
"
Соответственно рядовые пользователи не задумываясь будут платить через Google.