Okay if your argument is that they're lying about prices, then how is price transparency going to help? They will keep lying about the prices, or obfuscate prices further by breaking them down into smaller pieces.
Like the reason why insurance companies etc don't care about price transparency is because of the above. You're demanding something that won't work and will never work, unless the government steps in and says XYZ must cost YYY.
They aren’t lying so much as having different price tiers for everyone. The published price is the maximum price, it’s paid for only by auto insurance companies typically. Everyone else has a negotiated lower price.
Medicare prices for all would be a solution for example but doing so would both explode Medicare and bankrupt the hospitals