The Pentagon and Lockheed Martin have agreed to cost targets for the eighth low-rate, initial production (LRIP) lot of F-35s, setting theirs sights on $94.8 million per F-35A.

Target cost for the F-35B, to be used by the U.S. Marine Corps, is $102 million and the F-35C Navy variant is targeted at $115.7 million, according to Joe Dellavedova, F-35 spokesman for the Pentagon.

Total cost for the 43 single-engine, stealthy fighters in LRIP 8, including $500 million for advance procurement, is $4.7 billion. This does not include the price of the Pratt & Whitney F135 engine, which is purchased under a separate contract. Pratt does not disclose its prices, claiming this is standard process in the competitive engine market, despite being the monopoly engine provider for the F-35.

These target prices are 3.5% lower than those in LRIP 7, Dellavedova says. Lockheed Martin is responsible for covering cost overruns. The company and Pentagon equally split the so-called concurrency cost of retrofits to jets in LRIP 8 that have deficiencies discovered during the course of ongoing flight testing.

This order, which will begin being delivered in the spring of 2016, includes 19 F-35A conventional takeoff and landing versions for the U.S. Air Force as well as two for Israel, four for Japan, two for Norway and two for Italy.

It also includes six F-35B short takeoff and vertical landing versions for the U.S. Marine Corps and another four for the U.K. Finally, four F-35C carrier versions are being purchased – three for the U.S. Navy and one for the Marines.

Lockheed has delivered 115 F-35s to date.