Right, so if each drone that they launched cost $2,000 a piece, that means Iran spent About half a million dollars in order to make Israel spend two billion dollars. I had said in a previous comment on another post that I suspected it was an economic wrist slap rather than a military one.
That is a good point. You don't have to arm all of them. You just have to arm at least one. And then they all have to be shot down because they don't know which one is the armed one.
Indeed, also worth noting that these drones can be produced much faster than missiles. It's an actual game changer weapon because it's simply not sustainable to use traditional air defence methods against them.