I suspect part of the problem is that bricklaying is a human designed activity… what would a building process optimized for robots look like? more like 3d printing?
$680 is probably somewhat typical, I pay $1000/mo for family coverage.
It only covers "medically necessary" procedures as deemed by the insurance company (there are some laws requiring certain procedures to be covered). You have to use specific doctors and facilities.
Typically you have a deductible as well. I have to pay $4,000 out of my own pocket before insurance kicks in. Preventative care (check-ups) are usually covered by a co-pay, mine is $30.
There's usually an out-of-pocket maximum you can pay every year (mine is $9,000). That's the real value of the insurance... if you're in a catastrophic event hopefully it caps your costs (but it doesn't always depending on facility, procedures, etc).
Not sure what you mean by excess or value of coverage, but the answer is probably no.