Do you have "Premature Post Syndrome", Andrew?
The coupon thing is not all it seems, because the boy takes discarded receipts from bins (yuk) and uses multiple computers to print out more than the allowed amount.
The range of goods is very limited and it is not possible for a family to live for free by using coupons. It is also not necessarily money saving because the big brands are often more expensive than budget, even with the money off, as demonstrated by his dozens of fifty pence deodorants, when the cheapest in Asda is thirty pence.
It takes up the time of a paid job for little reward in my opinion, but looks a fun hobby.