|In reply to Comment 9 (Anonymous):
You said "Anyone with even a low-paying job could afford one", not "Any family, when living in a household with a combined average family income equal to or greater than the regional average could afford one"
There is a large disparity between those earning very little, and those top few % earning a large amount, which pushes the "average" income up.
People in low-paying jobs in the UK such as those working in supermarkets, fast-food places, bars or pubs, tend to get the national minimum wage of about £3.80/hr.
For a person in this situation, £500 for an A1 board probably represents their total disposable income for the year. Hardly "affordable".
If you'd said that your definition of a low-paying job was over £500 a week, I'd have agreed.