According to Wikipedia:

"The Tomahawk is a long-range, all-weather, subsonic cruise missile. Introduced by General Dynamics in the 1970s, it was designed as a medium- to long-range, low-altitude missile that could be launched from a surface platform or a submerged submarine. It has been improved several times and, by way of corporate divestitures and acquisitions, is now made by Raytheon. Some Tomahawks were also manufactured by McDonnell Douglas (now Boeing Defense, Space & Security)."

According to kgbanswers.com:

The average unit price of a Tomahawk missile is $600,000.

According to Wikipedia:

"During the 2003 invasion of Iraq, more than 725 tomahawk missiles were fired to key Iraqi targets."

According to my calculator, that is 435 million dollars in missiles.

According to Siewierska's book Functional Grammar, the proper usage is "fired at," not "fired to."

According to Wikipedia, these were "key" targets.

According to definition 3.a in the Free Dictionary by Farlax, "key" means "A vital, crucial element."