Applying for a visa while overseas

Hello,

I would like to enquire about applying for a single entry tourist L for China. I'm planning on visiting China from 15/10/14 for 3 weeks. I am a permanent resident in Australia and I am currently in Europe and won't be home until next year.
I have tried to find answers online but there is quite a lot of different information, so I am not sure of what is true or not. So if you can please email be back with any information for the few following questions that will be greatly appreciated.
*Would it be possible to apply at a China embassy in either Prague, Czech Republic or Budapest, Hungary as I will be in both cities for about a week so I should have enough time for the application process.?
*Also what documents do I need to bring to be able to apply?
*And if you have any information about the prices to make sure I bring enough on the day of applying.

Thank you for you time!