Have you people looked at the prices quoted in the article? Do you realize Israel's GDP is more than $200 Billion? Even without US aid, Israel can easily afford dozens of batteries and thousands of launches. If the thing works, it will be incredibly useful and cheap solution.
US rally shows support for ex-Marine held by Iran on spying charges (AP)
from the article: MESS Report / Iron Dome passes tests, but how much will it cost Israel?