Many middle-class Californians with individual health plans are surprised they need policies that cover more and cost more.

Thousands of Californians are discovering what Obamacare will cost them and many don't like what they see.

These middle-class consumers are staring at hefty increases on their insurance bills as the overhaul remakes the healthcare market. Their rates are rising in large part to help offset the higher costs of covering sicker, poorer people who have been shut out of the system for years.

Although recent criticism of the healthcare law has focused on website glitches and early enrollment snags, experts say sharp price increases for individual policies have the greatest potential to erode public support for President Obama's signature legislation.

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"This is when the actual sticker shock comes into play for people," said Gerald Kominski, director of the UCLA Center for Health Policy Research. "There are winners and losers under the Affordable Care Act."

Fullerton resident Jennifer Harris thought she had a great deal, paying $98 a month for an individual plan through Health Net Inc. She got a rude surprise this month when the company said it would cancel her policy at the end of this year. Her current plan does not conform with the new federal rules, which require more generous levels of coverage.

Some health insurance gets pricier as Obamacare rolls out -