Yesterday was the last day of the Obamacare open enrollment period for 2015, and now as we transition into tax season, people are starting to learn that those amazing subsidies that at last made health insurance “affordable” for so many weren’t exactly carved in stone.

A piece published Friday evening at CNN Money entitled “I have to pay back my Obamacare subsidy” relays stories of sticker shock by those who saw their generous subsidies all but disappear. The first involves Los Angeles resident Janice Riddle.

The Los Angeles resident had applied for Obamacare in late 2013, when she was unemployed. She qualified for a hefty subsidy of $470 a month, leaving her with a monthly premium of $1 for the cheapest plan available.

Riddle landed a job in early 2014 at a life insurance agency, but since her new employer didn’t offer health benefits, she kept her Obamacare plan. However, she didn’t update her income with the California exchange, which she acknowledges was her mistake.

Now, she has to pay back the entire subsidy, which is forcing her to dip into her savings.

CNN reports that “53% of Jackson Hewitt clients who received subsidies have to repay part or all of it, with the largest being $12,000.”

From cancellations to higher premiums to payback of subsidies, the Obamacare nightmare continues for millions.