Cruise missile can be easily intercepted by system like Iron Dome
Ballistic missiles are much harder to intercept
Let's make an estimation of unit cost of ballistic missile.
According to this article
A Sea-Based Pershing II missile can blunt China's A2/AD threat and help restore regional strategic balance.
nationalinterest.org
"A 1983 Congressional Budget Office report suggests the unit cost of the Pershing II was $4.2 million, or approximately $10.1 million in 2016 inflation-adjusted dollars."
^^Based on this we can make an estimation----
1800km range ballistic missile costs 10,1mln$ in USA (and note that Persing II was produced in small numbers)
----I read in one article that
price per ballistic missile is proportionate to its range.
So if 1800km range missile costs 10mln$ in USA,
900km range missile will cost 5mln$ per unit
and 600km range missile-3,3mln$ per unit
Now, these prices are American prices per missiles that were produced in small quantity in USA....
In Iran costs are 2-3 times lower due to
cheaper production inputs and larger number of produced missiles
So if in USA ---1800km range missile costs 10mln$, 900km range missile will cost 5mln$ and 600km range missile-3,3mln$
then in Iran
Sejjil 2000km range missile costs around 4mln$ in Iran
Dezful 1000km range missile--- 2mln$
Zolfaqar 700km range missile----1,3mln$
According to CENTCOM Iran has between 2500-3000 ballistic missiles
From 1:16:33
Assuming Iran has 3000 ballistic missiles---question is: how many PAC2 and PAC3 they have in the ME?
According to this source, Saudi Arabia has 88 launchers of PAC2 and PAC3
^^This is 352 interceptors...since they launch 2 interceptors per target--Saudi Arabia can intercept 176 ballistic missiles...Now assuming 40% success rate..Saudi Arabia
can intercept only 70 missiles, which is nothing compared to Iranian arsenal of 3000 ballistic missiles
And now, according to this source
Saudi Arabia (96 launchers)+ Qatar(44 launchers) +UAE(20 launchers) + Kuwait (40 launchers) have a combined arsenal of 200 launchers and 800 interceptors, capable of intercepting 400 ballistic missiles.... and assuming 40% success rate,
they can intercept only 160 ballistic missiles together.
The same source says US has 480 launchers of PAC2 and PAC3--this is 1920 interceptors capable of intercepting 960 ballistic missiles and assuming 40% success rate -
only 384 ballistic missiles
So even if USA will bring all of its ABM defenses to ME ---together with GCC
they can intercept 384+160=544 missiles
Compared to Iranian arsenal of 3000 ballistic missiles.
So even in worst case, if Iran will have 544 of its ballistic missiles being intercepted---another 2400 ballistic missiles will hit their targets deep inside enemy territory