TCPA class action against the Los Angeles Times. Final approval granted 2014.

In March and April, when the coronavirus really began spreading throughout the United States, many Californians rushed to the store to stock up on essentials: hand sanitizer, hand soap, paper towels and toilet paper. N95 masks were nearly impossible to find for those who really needed or wanted them.
While supplies were low, however, California retailers legally couldn’t hike up prices drastically. Price gouging during an emergency in California is illegal. In fact, retailers can’t raise the price of goods or services more than 10% after the president, governor or city mayor declares an emergency. The emergency declaration usually lasts 30 days, but government officials can extend it (as has been the case during the coronavirus pandemic).