DS is 8 and for the last couple of years he has been getting the same amount, we have a little system where he can earn more by doing extra jobs, it really works for him.
He gets £5 per week. For that he is expected to,
make his bed every morning,
Keep his bedroom reasonably tidy,
Put dishes into the dishwasher after meals,
Always behave and do well at school.
He can earn an additional £1 per day (we only count mon-fri) by doing an extra job, he often does this and ends up with £10 on a Saturday.
The jobs are,
Tidy his bathroom, which is usually just putting away the toys he has played with in the bath.
Hoovering a room or two.
Unload the dish washer.
Bring down his laundry hamper and put the clothes in the washer.
Put away the various toys that have accumulated in the living room, family room and conservatory (no toys are supposed to 'live' in these rooms)
He also receives deductions if he fails to do the expected tasks, we usually ignore one or two but if he skips a few, or misbehaves he will lose 50p - £1.
We have a little pocket money chart on the fridge which lists the tasks and extra jobs and he can cross them off when he is done. Then on a Saturday he swaps the completed chart for money.
He usually saves half and spends half on a magazine and a pack of moshi monsters or trash packs.
He is very good at saving, at the moment he is saving up for a lego set that he wants.