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Old 04-28-2016, 05:06 PM
Whack-a-Mole Whack-a-Mole is offline
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Join Date: Apr 2000
Location: Chicago, IL USA
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Antimatter

Nothing else come close really on a pound-for-pound basis.

A gram of antimatter costs around $25 billion to produce. Of course, there is nowhere near a gram of antimatter on earth so in real terms it costs less than other things listed here but in terms price/gram (or whatever weight measurement you want to use) nothing else comes remotely close. Not even the ISS.