how much is too much to pay for health insurance?

when the individual coverage was 99.00 a month, that seemed reasonable.then a financial advisor asked principal mutual to keep me forever.they went to 199.00 a month. the next year it was 400.00 a month. then they decided to go out of business, but they really didn’t go out of business, because they are still doing business.another company took over their clients: mutual of omaha.they decided to charge 600.00 a month. around 1999. fortis took over ,then it was 1700.00 a month for a few years, but by 2007 it was 2100.00 a month. now fortis/ assurant is charging 2450.00 a month, for one person.