Switched CGMs or pumps? Sell your leftover supplies

Last reviewed: August 2026

CGM technology improves fast. The Dexcom G6 gave way to the G7. FreeStyle Libre 2 was succeeded by Libre 3. OmniPod DASH was followed by OmniPod 5 with automated insulin delivery. If you've recently upgraded your continuous glucose monitor or insulin pump in Charlotte, there's a good chance you have sealed boxes of your old system that you'll never use again.

Here's what to do with them — and how much they might be worth.

Common upgrade situations we see

• Dexcom G6 → G7 — The G7's all-in-one design and 10-day wear made many Charlotte users eager to switch. G6 sensors don't work in the G7 app, so leftover G6 boxes become useless to the person who upgraded.
• FreeStyle Libre 2 → Libre 3 — The Libre 3's real-time glucose alarms drove major adoption. Libre 2 sensors can't be used with the Libre 3 reader, leaving sealed boxes behind.
• OmniPod DASH → OmniPod 5 — The 5's integration with Dexcom G6 for automated insulin delivery was a major upgrade. DASH pods are not compatible with the OmniPod 5 controller.
• Any pump → Tandem t:slim X2 — Tandem's Control-IQ technology attracts switchers from other systems, leaving old infusion sets and supplies behind.
• MDI → pump therapy — Moving from multiple daily injections to a pump often leaves behind CGM supplies chosen for MDI compatibility.

Are old-generation supplies still worth anything?

Yes — often more than people expect. The secondary market for diabetic supplies exists precisely because many people can't get the newest generation covered by their insurance, or can't afford the copay. Someone stuck on a plan that covers G6 but not G7 will happily pay below-retail for sealed G6 sensors from someone who just upgraded.

Old-generation supplies still have real value as long as they're sealed, undamaged, and not close to expiring. G6 sensors, DASH pods, and Libre 2 sensors all have active buyer demand in Charlotte.

For Charlotte-area sellers — and everyone else

1. Take a quick inventory — note each item, the model, quantity, and expiration date. A photo of each box takes 30 seconds and makes your offer faster and more accurate.
2. Submit a quote request— text or use the form. We'll respond the same day with a firm offer.
3. Meet for local pickup — anywhere convenient in Charlotte or the surrounding area. Paid immediately on the spot via Zelle, Venmo, Cash App, or cash.

What we buy from CGM and pump upgraders

• Dexcom G6 sensors and transmitters
• Dexcom G7 sensors (if you upgraded to a different brand)
• FreeStyle Libre 2 sensors and readers
• FreeStyle Libre 3 sensors
• OmniPod DASH pods
• OmniPod 5 pods
• Tandem t:slim supplies
• Test strips from any replaced meter system