Costs
Not in Durham, unfortunately.
In Scotland, I understand that care provision is free.
In England & Wales it's not.
The costs are worked out depending on the extent of the assetts of the individual going in to care. If they are affluent then they will have to meet the costs, which are by no stretch of the imagination 'minimal' and can mount up pretty quickly. As their assetts are erroded then the amount they contribute to funding lessens.
Assessments of need, that a Social Worker does when sussing out which type of placement would be best, looks at the proportion of care that is nursing care and the proportion that is social care. This can influence the extent of contributions.
Lastly, some people are admitted to a 'place of safety' (invariably a hospital) for treatment under section 3 of the Mental Health Act 1983. On discharge, their Social Worker is obliged to find appropriate social provision for the individual, and this is funded under section 117 of the Act as aftercare. It's not indefinate, and some areas und it for a very short period of time before reviewing it and expecting the individual to then pay.