For example: Apple cell phone, Florence sent to China, the postal courier about 50 yuan
If you choose other courier, international courier, such as FedEx DHL UPS TNT EMS, the speed is quite fast, but there will be to the Customs to be detained, 20KG of goods below the Customs easier, but more than 20KG of goods or send international courier, then, be Customs detained the chances are great, when it is very troublesome.
So the local postal service is recommended for small items, which is safe and worry-free.