We can discuss the price, or, in true Chinese fashion, negotiate the price.  However, the final negotiating bottom line is as follows:
 

Hourly rate:	¥ 80	plus taxi costs
1/2 day rate:	¥ 350	plus local expenses
Full day rate:	¥ 600	plus local expenses for 10 hours  per day
Weekly rate:	¥ 3500	plus local expenses for 6 full days per week
Advice via email in advance...  FREE.

Note: all prices are in Chinese Yuan (¥) - to check current exchange rates, visit http://www.xe.com/ucc.