Taobao agent served as an agent to help you buy things from the China's Biggest online shopping market - Taobao. By using Taobao Agent, it can save more money instead of direct buy from Taobao. A good agent requires fluent English to fully understand your requirments. Great market power to help you get discount from Taobao seller. Help you save money on inland domestic shipping and international shipping.
If you are not sure about which Taobao agent to choose, try to contact each with the same request of information and wait for replies. In this way, you can estimate how reactive the agent is, as well as the quality of reply (if it answers to your question in satisfied way): understandable English, clear answer to your question… Consider also, if your own language is available for this service, normally that would make communication easy and fast.