I make stuff because I like to really; not to sell. With time/labor it would be a wash. I'll send you one if you like, though. Better yet, I'll help you and you can make as many as you need.
I don't know what they weigh. Same as the Lumenok, I'd guess.
Yeah, I like that hard helical. Want them babies spinning like a bullet! I fletch those myself to get it that tight.
Let me know if you want any help.