In search of another Corentium Pro radon monitor to add to my “fleet.”
If you have one laying around that you don’t use, please send me your asking price, including shipping to Hutchinson MN.
Please keep in mind that a brand new machine with fresh calibration is currently $800 directly from Airthings. And calibration is pushing $200 nowadays. So if you have a used one in need of calibration, please price accordingly. 
Thank you.