Google did it finally, Now Google Play allows Carrier billing. That means in the next time when you make any purchase on Google Play music, movies and books store, you can pay in both through your Credit card or you can simply add those charges to your monthly mobile bill(For postpaid users it will be deduced from your existing balance).
This Service is provided in selective countries. Here are the detained report.
For US Residence: Carrier supported T-Mobile only (Sprint will be added soon)
For Japanese Residence: NTT Docomo, KDDI, and Softban
So what do you think, will it help you, or just another fail by Google!!