Alyosha, I've looked at that website, it doesn't say anything clearly at all, as far as I can see, but in any case , i have not done a "fag packet" calculation, I have looked up the official govt figures, and used my own knowledge.
How much do you think it costs a family to buy a home with an extra spare room, for example. Some families may not have to do that, some may be housed by the LA, but this again is extremely expensive, and that cost is not accounted for in the figures.
How much do you think it costs to have a chair lift built into every home which takes a disabled child, compared to two lifts in a children's home which might serve over 100 children in the lifetime of the lift? This is missing from the govt statistics too!
How much do you think special guardianship costs? There are tens of thousands of these orders made every year, and in the majority of cases the ENTIRE cost of raising that child is then born by the foster family, and none of this expense is accounted for in govt figures.
The govt figures also report far better outcomes for children who are housed in children's homes FIRST ( but worse outcomes for children who do the rounds of foster homes to begin with, then after repeated placement failures are then placed in a children's homes.
The govt figures also show that children's homes do slightly have the edge on stability of placements, although there are qualifications to this, in some situations placements are hugely more stable.
I do wonder how much real experience you have of ANY of these situations, in the uk or abroad,
You are living under a rock if you don't know that foreign unqualified teenagers waft in and out of children's homes abroad on a regular basis
that does not sound like good practice, but as i've said, this is a very long way from my own experience. My own children's home, which I have taken DC to twice, has had four sets of volunteers in the last 5 years, two of whom were us, and two of whom were the headmistresses sister, and her family. Each stay was about 6 weeks.