the income you say your son earns would make him eligible for tax credits that would lower the cost of his insurance well below the $425 you cite. i suggest you shop for coverage on the marketplace. go to healthcare. gov to find the information in your state. you'll be able to plug in some of his personal information including his income and get a sense of what a policy will cost. he could pay as little as $50 per month for coverage under the law.
my son's income is $1350 per month and his rent is $500 per month. . there is no public transportation in his community his fuel/liability insurance to get to work averages $300/month utilities average $200/month and health insurance at $425/ month. how is he supposed to buy groceries? he doesn't want to apply for public benefits.