Also included are MX-20 Multi-Spectral Targeting Systems and spares; SeaVue Maritime Multi-Role Patrol Radars; SAGE 750 Electronic Surveillance Measures (ESM) Systems; C-Band Line-of-Sight (LOS) Ground Data Terminals; Ku-Band SATCOM GA-ASI Transportable Earth Stations (GATES); AN/DPX-7 IFF Transponders; Honeywell TPE-331-10GD Turboprop Engines; M6000 UHF/VHF Radios; KIV-77 Mode 5 IFF cryptographic appliques; AN/PYQ-10C Simple Key Loaders; secure communications, cryptographic and Identification Friend or Foe (IFF) equipment; initial spare and repair parts; hard points, power, and data connections for weapons integration; support and test equipment; publications and technical documentation; personnel training and training equipment; U.S. Government and contractor engineering, technical, and logistics support services; and other related elements of logistical and program support.

Training and support is a wide category that very likely accounts for the price tag.