How much is current rate?? | 7-Eleven Rates and Plans | Consumer forum

Below is what I have seen on the official SpeakOut web:

7-Eleven SpeakOut Wirelesssm Services

Now the most convenient way to get wireless service is as close as your neighborhood 7-Eleven® store. With 7-Eleven SpeakOut Wireless sm service, your new mobile phone is ready to use straight out of the box and talk time is available at a low $0.15 per-minute on-network rate and doesn't expire for a year!.
Click here to here to learn about 7-Eleven SpeakOut.

However, I just tried once and was still charged $0.20 per min. Anyone has any issue on it?