The key feature of Iron Dome is it won't try to intercept rockets that aren't going to hit a populated area, which means the Israelis don't go broke shooting $1

The key feature of Iron Dome is it won't try to intercept rockets that aren't going to hit a populated area, which means the Israelis don't go broke shooting $100k interceptors at $50 rockets that were going to hit anything anyway. It's a tool designed to deal with the unique situation in which the Israelis find themselves. It's not any better at intercepting modern guided ballistic missiles than other systems.