Enemy rockets cost between $500(the simple ones) to $2,000(Hezbollah ones with higher explosives and the standard 1,020 metal balls inside). Iron-Dome missile costs $40,000. The big punch here is that the system is capable of ignoring a huge chunk of the missiles as only 20% of them hit populated areas thus saving a ton of money. The main main thing here is that the cost of the interception of a rocket that would otherwise damage a building and/or take innocent lives is NOTHING compared to the economic (and morale) loss of the construct repairs and the lives taken. Thus this system would not only save money for Israel and minimize the civilian casualties, it would also offer a sense of protection, enough for people not to desert their homes and perhaps their jobs. In conclusion Iron dome = huge success.
More than 2,000 migrants threaten to break out of Hungarian camp (Reuters)
from the article: Iron Dome success excites, but army balks at the bill