Thank you thank you thank you!
Here's Cigna: https://www.cigna.com/legal/compliance/machine-readable-file...
UCLA Health keeps theirs: https://uclahealth.s3-us-west-1.amazonaws.com/price-transpar...
But sadly, still can't find my insurance company's download links.
I can't wait to lose a weekend doing something with this data, it's a dream dataset and a perfect example of a very narrow type of project I love doing.
Is there a canonical list of the major insurance companies?