Not necessarily...on the federal plans I've seen(and they can be searched on line) minus their 70% contribution(depending on the plan) can range from 300 a month to 1000 a month. 600 falls about in the middle. Her parents possibly had the best insurance plan offered by their employer. Someone in their middle ages with a grown child would be expected to have the kind of income to support the best insurance plan at their employer. I also just got the bill for cobra from my previous employer--small business--and it was around 600 too(smaller pool of people so probably higher premium). Lots' of things to consider into figuring what went into that figure.
But you bring up a good point. My 60 year old mother was self-insured for a few years and paid about 400 a month. At 19, her parents could probably find her a better plan on their own for 1/2 that price.
I was in the Home Depot pool and mine was still $500!!!!! Ya'd think I could a gotta better deal than that! HD has thousands, if not tens of thousands of employees! Not a chance I could afford that on unemployment!
Don't know if it is true, but I was told before ObwanaCare it was only $283!