Cloaking device small 5 980 000 + Cost for Nomad brains 12 Runs Cloaking device medium 11 960 000 + Cost for Nomad brains 23 Runs Cloaking device large 17 940 000 + Cost for Nomad brains 34 Runs
I also added the number of runs you need to make with a 5k transport. As you can see, it's not really the cost for the materials needed that's the main issue. It's the time spent getting it! For reference, I've also made calculations on the worst case scenario. I'm not gonna put it all in here, since no one will build it at the highest possible cost, but the prices would be ~10 times higher for everything.