E-2D Hawkeye: $232 million

A major step forward for surveillance and reconnaissance, the Advanced Hawkeye's powerful new radar system will increase the range of territory an aircraft can monitor by 300%. "It can probably watch the pistachios pop in Iran," an analyst for the think tank Lexington Institute told National Defense in July. Though development of the plane is on track and two test versions have been delivered to the Navy, budget cuts may keep the planes grounded for at least a year longer than planned.

FULL E2-D SPECS HERE