Hi,
$10 is fine, but there's a freelancer fees of $5 on $10 that you'll have to pay.
Sample:
Why Learn Mandarin
A great number of foreigners are showing interest to learn Chinese. Over 30 million people from 85 countries around the globe are learning either standard Chinese or Mandarin. These foreigners who are studying Chinese are composed not only of businessmen but also of students who come to China to learn Chinese and other related courses. Mandarin Chinese is the most universally spoken language in the world. More than 1 billion people speak Mandarin, the majority of which use it as a first language. Mandarin Chinese is the official language of mainland China, Taiwan and Singapore, and one of the official languages used by the United Nations.
For some people, to learn Mandarin means you are going to learn a very difficult language. But this belief does not prevent many to try to learn Mandarin as their second language. For them, Mandarin Chinese is not really that difficult. In fact it is quite easy to learn because Mandarin language does not have a subject/verb agreement, no plurals, conjugations, tenses and they have simple numbering system. So whether you learn Chinese or Mandarin it will be easier if you put in a little time and effort. The language must be practiced daily with Chinese speaking friends, or learn Mandarin Chinese online. Find a great website and you can even learn Chinese free.
Regards,
Sans.