I really don't get it.
Things do not cost less if you are under 25. Food, clothes, transport costs, etc are not cheaper just because you are under 25. They cost the same for everyone so what's the reasoning behind paying them less?
The only thing I can think of is that under 25's are maybe more likely to be living at home than over 25's...except that doesn't always work because I know plenty of people younger than that who don't live at home and people older than that who do. Yet the over 25 would still get more JSA purely on the basis of their age.
AIBU?