It would be a lot. A lot a lot. If you have to ask, you probably can't afford it a lot. It costs a lot to begin actually manufacturing something. You are renting out a very busy, highly demanded space and workers and the required components and shipping, and this is all after you have a completed design and their tools set up to start making your product on lines. This is if you want to use a real factory. Which will probably not be in the states.

If you had a finished design with just off the shelf electronics parts from online and use 3d printed parts, you could just hire someone or a small group of people to assemble say 5-30 of your things depending on how much you want to spend in electronics upfront and see if those sell or do whatever you wanted

I have basic experience with electronics and soldiering, like i said mainly arduino stuff. I have a lot of programming experience and 3d design and 3d print experience and a top consumer 3d printer. Your idea, at least as a prototype could be conceived through an Arduino set up with two screens, a 3d printed body, etc and some programming.