I am on Evenity. I had the same problem as you when I had first checked on this drug. Everywhere I had called: No one knew how much I would be paying. I believe that my doctor had to get approval for this drug and it had to be given at an oncologists office. My doctor's office told me that they could not give me the shot in their office that it had to be done in another facility. I also believe the requirements for this shot was that you had to have a prior broken bone especially in your back. I have a Burst Compression Lumbar I Fracture and then I found out that I had Osteoporosis. I was a No. 1 candidate for another break. I have regular Medicare, Med B, a Medicare Supplement, and RX insurance. I took a chance and do not have to pay anything. But you are correct, no one could give me any estimate on the cost of this medicine. Evenity is making me stronger, I can feel it. I hope to be able to get the back surgery this year that my surgeon said he hesitated to do due to my Osteoporosis. I will be getting my 6th shot and have had no problems.