Well, iirc, the Avionic of the 'Cat was the most expensive part of the project. If it was exported without the Phoenix-AWG-9 system, and thus allow countries to use less expensive or indigenous systems, the airframe costs are not that expensive.
Generally the case...how much did Iran pay for its Tomcats? The end cost might be lower than that if lots of countries buy them, too, just due to volume sales.
They got about half, according to various books, including the Airtime one, on the F-14, and the Osprey book on the Iranian F-14 force. Supposedly, the Iranians have reverse-engineered the AIM-54A and begun to manufacture their own Phoenix missiles, according to the latter work.