I'm T1D (insulin-dependent). I used a Dexcom for a couple years a while ago, back around the G3 through G5 era or so. I ended up stopping using it because my diabetes is very well managed, and I found it didn't make a huge difference to my management. With my insurance, each new sensor every week cost about $50, and would fail in various annoying ways: sometimes it would just stop working in the middle of the week, o…
fwiw, my wife uses Freestyle Libre 3 and the with-insurance cost every two weeks is about $40. Whenever she's had one fail (which seems to be about 1:10), Abbott has replaced it free of charge and sent a pre-paid label so she can return the failed device for QA review.
The FreeStyle Libre 3 has a lower ongoing out of pocket cost for people who just need diagnotic monitoring but no integration with a pump. Dexcom , however, offered rebates that made it cheaper in initial outlay by the PBM to get people using, then left them paying the higher upkeep costs for functionality they may never need.
Something to keep in mind. Your insurer doesn't optimize for you. They optimize for them.