For those thinking that this is a hyperbole on my part - that PAC-3 missiles were used against low-cost targets - it is not. CENTCOM itself said that 500 ballistic missiles have been launched by Iran in the first 4 days.

In other words around 300 PAC-3 missiles were fired upon low-cost target, at least, and that is certainly just a conservative estimation.

@Tendar This assumes one interceptor per incoming missile. In one of the videos of a strike on a US base we see them fire off two initially, then a third after the first failed. While some will definitely have been used on low cost targets, the maths are not as clear cut as to exactly how many