>Here are the magic words in US Health Care: "What is the cash price?"
I'm not so sure about that. Especially in a hospital setting.
Many years ago, I was admitted to the hospital for several days as it was suspected (wrongly, but that's another issue with the perverse incentives in US "healthcare") that I had MRSA and the doctor wanted me on IV antibiotics while testing proceeded.
I spent three days in the hospital, getting discharged when the tests came back negative for MRSA.
Shortly thereafter, I received a detailed "explanation of benefits" (EOB) from my insurer, which put the cost of my hospital stay at ~USD$12,000 which included stays in two hospital rooms simultaneously as well as a pap smear (despite the fact that I do not have a cervix). When I complained about this, the insurer tried to make it seem unimportant, but I pressed the issue as both the hospital and the insurer seemed to be involved in some sort of fraud WRT billing.
I was told I shouldn't care because I wasn't actually paying, but I persisted as I was concerned that there was something hinky going on. That culminated in a conference call with my insurance company, the hospital's accounts receivable group and me.
The two other parties talked in insurance billing jargon for a while, but when pressed, they stated that the charges on the "explanation of benefits" was a fiction and that the insurance company and hospital group's contract set a USD$1,500/day flat rate for patients admitted to the hospital's facilities -- roughly 1/3 of the "costs" cited in the EOB.
The made up stuff (which they didn't even try to hide that it was made up) was there as "protection" for the hospital group as the "cash price" of such services, even though I couldn't have received such services (two rooms at the same time? A pap smear[0] despite the fact that I don't have a female reproductive system, nor do/did I present as anything other than a cis male?).
I imagine that there may be some cases where a "cash price" actually does reflect costs and might even be less than insurance costs (although that seems unlikely given my experience), but insurers and healthcare providers do and have for decades gamed the "cash price" to justify the insane overcharging of healthcare services. YMMV.
[0] https://www.mayoclinic.org/tests-procedures/pap-smear/about/...