But if they want to capture (or create, commercially) the market they’ll probably price it closer to $20 or under.

More likely is a dollar per day for T2 and higher for T1. The differentiator will be non-invasiveness, not price.

Then they will get their lunch eaten when smartwatch / ring / etc companies ship it for free. Probably smarter to go for market share with affordable one-time costs and build revenue from conplementsry goods and services.

It's a university research, not in-company. The tech is published.