It allows:

• call ordinary phones (include mobile phone) from anywhere
• send SMS by Skype (more expensive than traditional SMS)
  
• foward Skype call to any phone.(what's this exactly?)
  

Fee rate

• Calling China Mobile, China Beijing/Shanghai/Guangzhou/Shenzhen costs €0.017 per minute.
• Send SMS to China phone number costs €0.045 per message.

The fee rate is no matter where you are, it's only about where you are calling.

Payment way

I use my Visa credit card. The whole process was done within Firefox successfully. I start the online payment from aborad web site and was redirected to somewhere in China at the last stage for asking my credit card password as usual I pay in China.