The average cost of a family (four people) is ¥11,694 ($1669) without rent. If you are single, the cost decreases to ¥3,213 ($458). Teaching in Hangzhou is always a good choice.
As for the rent, the rent cost in Hangzhou is much lower than in that in Shanghai. A single apartment with one bed in city center costs around ¥3,115 ($445), while with three bedroom costs about ¥6,950 ($992).