Ask HN: Where can I buy a cheap consumer level EDA sensing device?

I'm keen in playing around with some SGR/EDA data, but even in the niche field of biometric sensors, the tech seems neglected when compared to a relatively low yield technology like single sensor EEGs, which is also quite niche, but a more competitive market.

And generally, is anyone else interested in this space? The high-end stuff like the Neuralink mission naturally draws headlines, but on the other end of the scale, devices like the Muse and Emotiv headbands obviously have a market, but aren't close to mainstream.

At some point, these kind of devices will become widely prevalent, but in what form, and for what applications?