I have been researching the flights for china internally with the routes
Beijing - Xian
Xian - Shanghai
Shanghai - Guangzhou

It appears that booking with the airline direct is cheaper than the agents (elong, ctrip etc)

Elong are 750 wheras the direct price is 300 odd. The difference is that the fares are fully restricted and non refundable, is it possibel to get these fares from agents?