All these numbers are approximate.
We pay, my wife and I, $200.00/month for Medicare. We also pay $250.00/month for supplemental insurance. We recently signed up for drug coverage and since we did not sign up when the coverage was first offered, we pay $100.00/month.
I have high confidence that Medicare will pay since it is a government, non-profit service. I have less confidence in the supplemental insurer which is for profit and will probably pay as little as possible when we have a claim. The drug coverage is also through a for profit company. I currently pay more for the coverage than I am saving in my prescription costs.