It's one of the sadnesses of real economics that those least able to afford it often and up paying the most. More often than not it's not malicious; if they don't have a car to reach the supermarket, or don't have the cash to buy a pair of shoes for £150 that will last ten years rather than a pair costing £15 that will last six months, it's just unfortunate.
Then there are firms that deliberately fleece the poor buggers. The loathsome Brighthouse is such a one, as recorded by the Indie this morning. But so too are the mobile phone companies with HP deals on new phones disguised as airtime contracts, not to mention the 'payday loans' sharks, all operating this side of legality. Whilst the middle classes are more immune to the lure of the latest iThing or Wastestation V and anyone with any appreciation of visual quality and rendition will realise that your old CRT television has a picture equal to the latest faddy LCD tvs, the poor are often gullible dupes, early adopters.