text: I don't know exactly how much in money. but of course millions, but it is by time and by people donations, government spendings and organizations fund.   In addition, shiite consider that place is sacred and holy.  it is for them like Mecca for whole Muslims and many sunnis also respect it.  but the hardline sunnis such as Wahabites and Qaeda, those consider shrines as places for worshiping bodies and not God as they claim.  Wahabites (those who dominate Saudi Arabia and Many Al-Qaeda Members)  has long history of attacking and targetting such places.  in last 200 years, they destroyed several shrines in Saudi Arabia.  they also once attacked Iraq cities when the whole region was under Turkish rule (Ottomans).  and They made attrocities, \n\nAlso, this shrine value alot historically, it is ancient, and renewed several times, at least 100 years old for the golden doom, and for the shrine hundreds of years.  the tomb s for men died almost before 900 years. \n\nMany people died because of such attack after that.  however, it is not first attack on a shrine, in the beginning after the war of 2003, Al-Qaeda assasinated one shiite leader by a huge explosion in Shrine in Najaf which damaged the shrine hardly and killed more than 100 prayers.  and several attempts done against another shrines.   in Iran, once also shrine in Mash-had attacked by such extremist, although Iran blamed the communist opposition.\n\nThe goal behind such attacks is to make civil war, and it is launched at least at first place by those foriengers, fanatic Islamists and Arabists who came across border to commit their plans in driving US out, so they can establish an Islamic empire that can conquer the world and spread Islam.