Put the two pages side by side and the bill is identical, because it is one craft. The dragon has no blueprint of its own: you learn the plain rocket launcher, queue it at a Level 2 bench and pick the dragon look if your account owns it. The same metal pipes and high quality metal go in either way.
So there is nothing to plan beyond the plain tube. Your scrap goes into that one blueprint and then into the explosives that open its rockets. The paint never costs you a second research.
Nothing in the numbers changes either. The dragon fires, reloads and recycles like the plain launcher. Pick it for the look; without it you lose nothing at the wall.
Questions
Dragon Rocket Launcher ×10: how many resources?
High Quality Metal ×400, Metal Pipe ×40.
Which workbench does Dragon Rocket Launcher need?
Workbench level 2.
How long does Dragon Rocket Launcher take to craft?
25 s for one, every step included.
How much scrap does researching Dragon Rocket Launcher take?
