No, I think you're right SB. Since when was cost a factor when it comes to new weapons?
It's always a factor. War is expensive. So when a bunch of new wet-behind-the-ears recruits straight out of boot were dumped on the front lines, their sergeant told them there were not enough weapons to go around. "Just point your fingers like a pistol and shout BANG! BANG!" he advised.
With that, the fresh meat was tossed into the grinder. One private found himself separated from the rest of his platoon amidst all the mayhem. Just then, a ferocious dreadnought came charging over a hill, foaming at the mouth and raging like a demented animal. Scared spitless and knowing he did not have long to live, the private cocked his thumb and pointed at his assailant, his voice squeaking an octave or two as he shouted "BANG!"
To the private's surprise, his enemy stumbled and fell, twitched once, and was still. Laughing hysterically when he realized he was still alive, the private then charged brazenly over the battlefield dropping a score of enemy soldiers, "BANG! BANG!" He was unstoppable.
Then another big brute came charging at him and the private shouted, "BANG! BANG!" But the guy kept coming! "BANG! BANG!" He shouted again, to no effect. He worked the slide of his finger and checked his thumb—maybe it was jammed. "BANG! BANG! BANG!" He screamed in desperation.
The human avalanche hit the private like a speeding truck and trampled him into the mud. As he passed over, the private heard the guy grunting, "TANK! TANK! TANK!"