hi, I developed a new app and implemented a 1 dollar pay button in it using anjlab library when I tried to test it and pay from a credit card it shows me as google will take 0.3 from that dollar shown in photo
https://support.google.com/googleplay/android-developer/answer/112622?hl=en
For apps and in-app products offered through Google Play, the service fee is equivalent to 30% of the price. You receive 70% of the payment. The remaining 30% goes to the distribution partner and operating fees.