I've calculated how many goods are required for making the steam engine parts(without great success). Freel free to correct if I'm wrong:
3000 Coal
1050 Iron
250 Black Ore
140 steel
90 Gunpowder
90 Cannon shots
YoGolan 04-25-2017
I built all 3 parts with only 90 Steel cannonballs and approx. 4.7m using stockpile production at factory nation where I born.
Also all suckers which sells SE Parts for more than 10m right now, deserve to be "raped".
So, to use stockpile production u need to have only consumables, trade goods don`t required.. u pay for them, much cheaper than sharks used to sell in CS or BZ.
GL too everyone and don`t let these mofo to fool you :)