I have 3 kids, and the older two are getting to the age where they want to shop a little independently.
One is nearly 12, and one is 10.
The older one is starting to want to choose her own clothes, maybe go to cinema with friends and buy presents for friends, younger one would just like the odd pack of Pokémon cards.
I had wondered about £20 p/m for the older one, and £10 p/m for the younger? Seems like a disparity but the older one is at high school and starting to do more independently.