Or for even more context, it costs on average £50k to feed and house a prisoner for a year. You would expect a child to cost more, but not *that* much more.
Let's say that we allocate £20 per day for food. That's enough for a nice M&S ready meal every night, a reasonable packed lunch and breakfast. That's £7300 for the year. Now I pay about £300 a month for gas an electricity for 4 people. So lets add £900 for the cost of heating and cooking. We can even bung in £450 to cover water charges. I pay £2k a month on my mortgage which buys a house for 4 people, so lets allow £500 for accommodation costs. That's £6k per year. This is a child so we need some cash to cover trips, birthday presents, school equipment , clothes etc. Let's be generous and allow £1000 a month for expenses. Now let's send them to a Private School that has the ability to cope with mental health issues, has small class sizes etc so add £24k.
That's £50,300. Of course, the child will need someone to look after them. So lets add in the cost of some full time carers at a decent salary. Lets have a rotating set of three carers each doing 8 hours per day and pay them £40k each to get good calibre staff. That's £170,300. And that's bespoke care for one child with no economies of scale.
I'm struggling to see where the remaining £150k is being spent. Any ideas?