I'm confused. You're currently paying $300 pp pm. That is much better than $530 pm.

the per person amount hardly matters for a family's budget...the fact is you're paying far more than a single person

Of course per person health insurance costs matter when discussing health insurance costs. Why would one compare the cost of one apple to the cost of a bag of apples?

"I'm not sure why I can't afford to feed my children, I only have 12 of them."

Children are getting covered just like adults are. Just because they aren't/can't earn an income to cover it doesn't mean it doesn't cost just as much to the insurance provider. In fact, children tend to go to the doctor more, so...