Google pLay store 30% cut

So I was reading google play store guidelines for in-app purchases. If one creates a website for the user to login and purchase a subscription plan for an andriod App, and then user logs in to the Andriod App after purchasing a subscription, does google take a 30% cut in this scenario? I was reading google play store guidelines and it says the following below but it's not clear at all. Would love your help.
Google Play has a strong policy related to in-app purchases. All in-app purchases in Android apps have to use Google Checkout, except in two cases
1. The purchases are for actual, physical goods.
2. Whatever you are purchasing can be consumed elsewhere like digital videos, music, and books.