Just a couple thoughts:
First I just looked it up on YouTube. A lot of people appear to be building them with 3D printed parts. If you build one from actual metal parts you should definitely make a YouTube video on your entire build. You may be the only one willing to take the project on for real.
A second thought I had is that because these parts are so small, you might do well to by a micro mill and lathe to build this with. These tiny parts might be difficult to make on standard size machines. As I say, this is just a thought.
Finally, if you do build one from actual metal parts it will be worth at least a grand when you're done. Maybe quite a bit more if you do a really super job on it.
And one last thought:
If you build this, take great care to keep track of any and all jigs of fixtures you might need to build along the way. You should video those projects with the same care you video working on the actual parts. Keep all the jigs, fixtures, and tooling together in box specifically for them. If you ever decide to build another one you'll be glad you kept track of all these things.
Also, after you build it, if you do a good job on the video documentary, you may inspire others to build it as well. In that case you may even be able to make up a "
jigs and fixtures" kit that you can sell to those who might want to build one. As I say, just some thoughts to ponder. In fact, you might even want to think about making up an entire "
Raw Materials Kit" to build one. So keep track of everything you do really well. You might be really glad you did at some future date.
If you have a raw materials kit, a jigs and fixtures kit, and an entire series of step-by-step constructions details you might actually create a nice little machinists hobby project. I think it might be especially attractive if you could do the whole thing on a small micro mill/lathe. After all, all these parts are going to be really tiny, so you hardly need a huge lathe or mill.
Just a ramble for whatever it might be worth.