Travel Visa to CHINA from Korea for a British Citizen

Dear Sir/Madam,

Thank you for all the great information provided on your site.
Just a quick question.
I am a British Citizen and currently in South Korea.
I would like to visit China for a holiday and to visit my family who live in Beijing (Brother and his wife (PRC Citizen).
I would only go for two weeks maximum.
Is it possible to book flight tickets and obtain a visa for single entry to China from Korea for a British Citizen?
If so what are the Visa fees?
I have travelled to Shanghai from Seoul for a holiday back in 2009 and the travel agent arranged visa and flight tickets, but just wondering if rules or costs have changed since then?
Any information would be much appreciated.
Kind Regards
KENNETH