I have one every year. Both my sons and my sister have had one, and my daughter will have one sometime before she turns 18. I have mild HCM, which runs in families, so all my blood relatives have to be tested.
Unfortunately, brain aneurysms are hard to detect and almost always are only discovered when they blow.
I don’t recall what the total billed amount was, since (fortunately) Medicare and my Plan F supplemental fully covered both.