The hon. Gentleman is absolutely right. [Interruption.] My hon. Friend the Member for St Albans (Mrs Main), who is sitting next to me, mentions catalogues: catalogue credit has worked on that basis for a long time, stressing the weekly repayment amount. There is also an ability to shift the amount that is apparently the cost of the product and how much is paid for the financing—in the case of catalogues, that is often zero, but the base price is inflated to allow for that.
My worry about the approach in the new clause tabled by the hon. Member for Makerfield is that I do not know how we would make the price comparator work. She made an important point about product numbers. As electronic comparison capability increases, it will be important to be able to make a direct like-for-like comparison, and adding an extra letter to a product number to make such comparison impossible should certainly be cracked down on.