Ha ha ha - I just typed in 'London Underground', it then came up with the website and the option to find out the price of tickets between various stations, it really is that simple!!
I guess, in retrospect, you must be 5 AND retarded!!!
It amazes me how lazy (dopey??!!) some people are!!
You've got a computer, so unless you are 5 years old or retarded it surely can't really be that difficult to find all this out yourself!!!!!!