B2 轰炸机 (右) F-22 左

B2只有20架

一架7亿3千7百万美元造价

B-2“幽靈”(英語:Spirit)是目前世界上唯一的匿蹤戰略轟炸機[1],於1981年10月20日打敗洛克希德/洛克威爾,由諾斯洛普/波音團隊贏得先进技术轰炸机計劃(The Advanced Technology Bomber, ATB),在麻省理工學院科學家協助之下為美國空軍研製生產[2][3][4]。1997年,首批六架B-2轟炸機正式服役,而至今一共只生產21架。在F-117A夜鷹攻擊機退役,F-35閃電II式戰鬥機尚未服役之時,B-2與F-22猛禽式戰鬥機為目前世界上僅有可以進行對地攻擊任務的匿蹤型機種。每架B-2造價為24億美元,若以重量計,B-2的重量單位價格比黃金還要貴兩至三倍(最初裝備時)。
美国 独立日 阅兵 B2 F22 轰炸机 战斗机

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一架7亿3千7百万美元造价

谷歌搜到的英文信息显示这个数据,维基百科显示单位24亿美元(2009年币值

专门加上造价搜索中文采用的数据都是24亿美元
Northrop Grumman B-2 Spirit – $2.1bn
The Northrop Grumman B-2 Spirit is a US Air Force (USAF) heavy-penetration stealth bomber launched in 1989. The aircraft can infiltrate complex and dense air-defence shields, while it is capable of all-altitude attack operations up to 50,000ft.

B-2’s original unit cost was $737m, making it the most expensive aircraft ever built. However, due to retrofitting and adjustments in 1997, its overall cost now stands at $2.1bn. It costs $135,000/hr to operate.

B-2 has two main defences to protect it against radar detection, including its costly stealth coating known as ‘alternate high-frequency material’ and its continuous curvature design.

A total of $60m in general upgrades are carried out on each aircraft every seven years.

B-2 Spirit travels up to 628mph, has a length of 69ft, a width of 172ft, and height of 16ft. It has a maximum takeoff weight (MTOW) of 170,600kg and features four General Electric F118-GE-110 turbofans (non-afterburning) with 17,300lb of thrust.

The aircraft has a flight range of 11,100km and a 3,000ft/min climb rate. The two-pilot stealth bomber is able to carry 40,000lb of weapons.