That is true everywhere. Cash rate is 50% less than insured rate.
Insurance will pay inflated rates.... because they benefit financially from doing so...
I ask for the cash/self-pay price often. I have to see a specialist twice year. If they file with my insurance, the cost of the visit and labs is a little over $300. Self-pay for the visit is $111 (they discount their charge 70%) and the labs are usually around $50. Of course, none of this gets applied to my deductible, but I'm willing to make that trade to save a few hundred dollars.
Had to have an MRI last year. Priced it through insurance and it was close to $2k. I did self-pay and it was $560.
We need price transparency across the board and we need to have a flat price whether they file on insurance or self-pay.