Originally Posted by
Skyman65
But for the audio guide, the English price was "40 RMB", while on the Chinese side, it said "十元" (10 RMB).

I assume that the audio for the 10 RMB version is only available in Chinese language. Since my wife and I both understand Chinese, we went with that one.

Although the marginal cost of providing the guides is probably about the same, it's significantly cheaper to find a Chinese speaker to read the script for the Chinese-language guide than to translate it and find a decent english speaker for that guide.