The creator could answer that question a lot better than me but:

The cost is very dependent on part availability. iirc rn its like $70 ish aud plus shipping to get 2 of them made and assembled via JLCPCB, assuming you’re using a free PCBA coupon. There’s also the probes which are pretty damn expensive (like 60 aud for a box of 50) and the other accessories. From what i’ve seen uses electrolysis machines start at about $1000 for the really old ones.

On top of the electronics you also need 2 9v batteries, a keyboard foot pedal that fits the aux socket, a soldering iron, wire, an EKG electrode or something like that, and a mechanical pencil that can fit the probes (i.e https://www.jerrysartarama.com/yasutomo-artist-mechanical-pencil-1-1-mm-black)

You’ll also need alcohol wipes, gloves and a face mask for sterility reasons. A magnifying mirror or loupe seems important too.

I don’t want to say too much about safety as I’m not an electrician or anything, but the board does run off 2 9v batteries, which limits any electricity related danger. Don’t reuse probes between sessions, treat it like an injection, you should be fine.

The alpha branch is still under testing, maybe don’t order it until the creator confirms it works.