Actually I think private plans might be much more. At my workplace, the dependent “child” who is not a full-time student and under 26 is charged at FULL ADULT PRICE, not subsidized by the employer. I think that runs at least $400-$500/month here, probably normal.
This may be one of those situations where it is just ASSUMED that the private sector has some great deal.
The dirty little secret is... it is costing employers a fortune and they dare not say a word IMHO because they fear "the One's" Administration coming down on them like some here theorize when they went after Toyota to help out GM....
If I am correct watch the mask come of this mess sometime after 11/7 or maybe in the spring....