If you are only using the strips to calibrate the Dexcom, would it be possible to just pay out of pocket for the Contour Next strips and meter? They are all available on Amazon and seem reasonably priced. At only 2 strips per day they would last for some time.
And perhaps keep your stash of One Touch Ultra for times when you might not be on the Dexcom for one reason or another and are doing many more fingersticks per day?
A 300 count of the Contour Strips from Amazon is currently listed for $63. (21 cents per strip)
At only 2 strips per day that would be like 5 months of Dexcom calibrations.
And the meter is only $10 on Amazon.
Perhaps an option?
https://www.amazon.com/Bayers-Count-CONTOUR-Glucose-Strips/dp/B01310CAHQ/