The East London Advertiser is now re-named the Docklands and East London Advertiser. It is the dominant local newspaper in Tower Hamlets, but also sells well in Hackney and Newham.
Many years ago George Orwell outlined how the poor pay more for goods than the rich. The wealthier you are, the easier it is to buy in bulk, and therefore to buy more cheaply. Two loafs of bread are often cheaper, in real terms, than one. A modern variant of this is where the wealthy pay less for the same item than others - for example the student discounts given at take aways and clothes shops to usually middle class students living in many inner city areas.
Another example exists in east London. Buy the Docklands and East London Advertiser in Hackney, Newham or Tower Hamlets at your local newsagent, and you will be charged 60 pence. Go to Canary Wharf, and amble down any of the shopping malls - and the East London Advertiser is free.
Clearly those working in Canary Wharf are considered more valuable customers than those living in the heart of east London?