Sadly the answer, in my personal opinion, is that wherever you live in the World the richer you are the more likely you are to have the best treatment money can buy.

The UK has a great free National Health Service paid for through taxation but only drugs and treatments judged to be cost effective are routinely approved. There is a long-running battle between the government and big drugs companies over the cost of drugs especially new ones. 

The situation is better here than in countries like the USA where healthcare is funded privately or through insurance but certain types of chemo and new procedures such as cyberknife ablation of secondaries are still only available privately. 

Best wishes

Dave