I remember looking into this years ago, and the prices were in the $100-$200 ran... | Hacker News

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willsr on Jan 21, 2019 | parent | context | favorite | on: On whether changes in bedroom CO2 levels affect sl...

I remember looking into this years ago, and the prices were in the $100-$200 range for low volumes. Was this your experience?

tossandturn on Jan 21, 2019 [–]

Yes

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