Quick answer: At full retail, a month of Dexcom G7 sensors runs roughly $500–$580 (a single 10-day sensor is about $180–$195). But almost nobody should pay retail. Dexcom's own pharmacy discount takes more than $200 off every 30-day supply, GoodRx-style coupons can bring the 15-day sensors to around $175 a month, and low-income patients may qualify for income-based assistance through Dexcom's program. And before you commit to paying cash at all, it's worth a free coverage check — a surprising number of "uninsured for CGM" situations turn out to be billing problems, not coverage problems.
What full retail looks like
The G7 has no base unit to buy — your phone is the receiver for most people — so the ongoing cost is the sensors. Each classic G7 sensor lasts 10 days, so a month means three of them. As of mid-2026, typical US cash prices with no discounts at all:
| Item | Typical retail price | Notes |
|---|---|---|
| One G7 sensor (10-day) | $180 – $195 | Sold individually or in 3-packs depending on the pharmacy |
| One month of sensors | ~$500 – $580 | Three 10-day sensors, or two 15-day sensors |
| Dedicated receiver (optional) | ~$375 – $430 | Only needed if you don't want to use a smartphone |
| A full year of 10-day sensors, retail | $6,000 – $6,900+ | Which is why the discounts below matter (a year of 15-day sensors retails somewhat lower) |
Prices swing a lot between pharmacies — sometimes by $100 or more for the same box in the same zip code. If you're paying cash, it genuinely pays to compare two or three pharmacies before filling.
Dexcom's own pharmacy discount (used instead of insurance)
This is the one most cash payers miss. Dexcom runs a cash discount program through its savings center that anyone with a G7 prescription can use — provided you're uninsured, or you opt out of using your insurance for that purchase:
- Over $200 off each 30-day supply of sensors (Dexcom's own pages have quoted $200, $210, and $230 during 2026 — check the savings center for today's figure). Larger fills save more: Dexcom lists $400 and $600 off 60- and 90-day supplies.
- Up to $240 off a G7 receiver, if you need one
- Usable up to 12 times per year — so it covers every monthly fill
- Free through Dexcom's savings center; the pharmacist applies it like a coupon at the register (retail pharmacies and Amazon Pharmacy)
That takes a ~$580 month down to the $300s at many pharmacies. Still real money, but a very different number than retail.
GoodRx and other pharmacy discount cards
Discount cards like GoodRx, SingleCare, and their many clones negotiate cash prices with pharmacy chains. For the G7 they're genuinely useful, with two caveats:
- The price varies by card and pharmacy — as of August 2026, SingleCare's discounted price for a month of G7 sensors ranges from about $210 at one chain to over $420 at another, while GoodRx's prices cluster tighter. Always compare before you drive over.
- You can't stack a discount card with Dexcom's own discount or with insurance. Whichever single route is cheapest that day is the one to use, and a pharmacist can run the comparison for you at the counter.
Fair warning about the wider "coupon site" ecosystem: most sites advertising a Dexcom G7 coupon are simply reselling access to one of these discount cards. The card is free everywhere — never pay a fee or hand over payment details to "unlock" a pharmacy discount.
The 15-day sensor changes the math
Since Dexcom launched the G7 15 Day (December 2025), a month of wear means two sensors instead of three — and cash pricing has followed. With a GoodRx-style discount, a 30-day supply of 15-day sensors has been going for around $175 at participating pharmacies, versus roughly $450–$500 retail. Two things to know before asking for the switch: the 15 Day is cleared for adults 18 and up (the 10-day sensor remains the option for ages 2+), and in Dexcom's own study data about a quarter of sensors didn't reach the full 15 days of wear. If you're paying out of pocket and your prescriber hasn't mentioned the 15-day version, it's still worth asking whether it's appropriate for you — same phone app, longer wear, fewer boxes.
Dexcom's patient assistance program
If money is genuinely tight, don't quietly ration sensors — apply for assistance. Dexcom offers income-based discounts to eligible US residents through assistance.dexcom.com. Dexcom doesn't publish a flat program price — eligibility and pricing are set at application, income limits and documentation requirements apply, and terms change over time — so apply directly or ask us and we'll point you in the right direction.
Community health centers and diabetes clinics can also sometimes provide sensors through their own programs — another reason the "talk to a human" route beats silently paying retail.
Before you pay cash: make sure you're actually uninsured for this
Here's the thing we see constantly: someone pays cash for months because a pharmacy told them "your insurance doesn't cover Dexcom" — when the real story was that the claim went through the wrong benefit. Many plans cover CGMs under the medical (DME) benefit rather than the pharmacy benefit, and a pharmacy register can't see that. The claim rejects, the patient hears "not covered," and starts paying retail unnecessarily.
A benefits check looks at both sides of your plan. It's free, it takes about two minutes to request, and the worst case is you confirm cash really is your best route — at which point the discounts above are your playbook.