Android in-app payment for physical items, where to store price information?

Question

I am working on a Android app with the possibility to purchase a physical items. The payment will be implemented with help of the Paypal SDK. Now i am facing a problem. I only offer two products which can be ordered. First one for say 10 Euro and the second one for 15 Euro. Where do I have to place the price information which is then to be transfered to Paypal? I don´t think hardcoding the price for my items into the app is a good approach, but I did not find any better solution for it. I decompiled the app of one competitioner and saw that he also just saves the price into the app?

Once i hardcode the price information into the app, how should I change it in future? Old app installations will always have the old price? Lets say it was 10 Euro and now it should be 12 Euro?! How should I change that? One possibility would be to get the price informaton from my CloudService each time the user starts my app?

What are other solutions for that problem? I want to be flexibel to change the price of my products and to be safe from manipulation. (I would verifiy the payment with my CloudService and Paypal)

Regards

Answer 1

在您的服务器上存储价格这是最好的方法

Answer 2

You set pricing in Google Play Console.

Go to your application, Store presence, In-app products.

You can add your products and pricing info in there.