Corrected my disremembering price but still some folks saw a massive increase. One
link about it from AP is here. From that link:
Among them is Susan Hosford of Denison, Texas. On a typical February day, she pays Griddy less than $2.50 for power. But the one-day cost spiked to hundreds of dollars after the storm. In all, she was automatically charged $1,346.17 for the first two weeks of February.
Still looking for where I got the $9k/MWh from as it still is ringing a loud bell.