That is the average cost? How much would that be if we looked only at the min-sec cost?
If it is anything like the institutional system, the people who need dedicated watchers 24/7 are so, so much more expensive that person like my family member, who needs only occasional help managing his normal life and doesn't need anybody to guard him.
https://lao.ca.gov/policyareas/cj/6_cj_inmatecost