well lets see here, I cant make them for less if you mass market, tooling and injection molding costs a lot, and 3d printers just anret fast enough for mast market... however, and hear me out on this...https://www.youtube.com/watch?v=aBpT19RgXPk
its not all that hard to sculpt, refine, and add detail, this video I think shows some of the versatility even in blender when it comes to sculpting,
from here there are various tools that that can let you pose exactly how you want, if you want something that is replaceable, there are tools to make ball joints, but if you go one and done you can use sI think some free tools that distribute weight so the thing stands up or balances the way you want it to.
from here its just getting your thing printed, depending on how many you want or if you liked the process, buying your own or renting a 3d printer, detail wise you are looking at a resin printer, I think a laser printer, dlp may give enough detail but laser definitely would.
granted, this is something im starting to learn myself for my own fun.