Americans are feeling increasingly exposed to higher healthcare costs.

In particular, high-deductible health plans are on the rise. According to a September survey, the percentage of workers with an insurance plan that requires them to pay up to $1,000 out of pocket passed the 50% mark for the first time. That means consumers have a clearer picture of how much healthcare costs them.

The survey also found that more than half of Americans tend to be under-prepared for healthcare expenses: 55% got a bill that they didn't budget for. (Many people with high deductible health plans are eligible for health savings accounts, which they can use to fund that out-of-pocket cost until their deductible is met.)