The Best Place to Sell CGM Sensors: What to Look For

Last updated: October 29, 2026

The best place to sell CGM sensors is a buyer that gives you an offer before you ship, pays for the shipping, tells you exactly when you'll be paid, and is clear about which boxes it can and can't buy. Use the checklist below to judge any buyer. Under each point is how Day2Day Strips handles it.

CGM Sensors We Buy

We also buy Dexcom receivers and FreeStyle Libre readers that are still sealed in the box. Shorter date than the table shows? Just ask — we still buy short-dated boxes of some brands.

What to Look For in a CGM Sensor Buyer

1. An offer before you ship

You should know the number before anything leaves your hands. We reply with an offer by text, usually within minutes, and there's no obligation to accept it.

2. Free, tracked shipping

Selling shouldn't cost you postage. Accept our offer and we email a free prepaid, tracked label, with nothing to pay at the counter.

3. Payment timing, stated up front

Ask when and how you'll be paid before you agree. At a Sacramento meetup you're paid on the spot (cash, Zelle or Venmo). By mail, you're paid within one business day of arrival; most boxes are paid the same day they land.

4. Clear rules for opened or damaged boxes

Opened or damaged outer box? If each sensor is still sealed in its own package, it's case by case: we'll make you an offer or tell you honestly if we have to pass. A sensor whose own package has been opened can't be bought.

5. A straight answer on what isn't accepted

We don't buy Medicare, Medicaid or other government-issued supplies. Items marked “Not For Resale” aren't accepted either.

6. What happens if something doesn't match

Your offer is locked before you ship. If it's as you described, we don't re-grade on arrival — the number we emailed is the number you get. If something doesn't match, we contact you first, and the offer never changes without your say-so. If we can't buy at the offer we sent, it ships back to you free.

7. A real person to text

You're texting the person who makes the offer and sends the payment. There's no ticket queue, no chat bot and no account to create.

Expiration Dates and Your Offer

Along with the product and how many boxes you have, the time left before expiration shapes every offer. Top offers go to Dexcom G7 boxes with 8+ months left, Dexcom G6 and Medtronic Guardian 4 boxes with 10+ months, and FreeStyle Libre sensors with 5+ months. The date is usually printed next to an hourglass symbol on the box.

How to Get the Best Offer for Your Sensors

• Keep every box and sensor package sealed. Sealed retail boxes get the best offers.
• Send the exact date on each box, not a guess.
• Tell us everything at once. Mixed brands can go in one box or one meetup for one offer.
• Larger quantities can earn a better offer per box.

Selling in Sacramento or by Mail

If you're in the Sacramento area, a meetup gets you paid on the spot with nothing to pack. Anywhere else in the US, mail-in uses our free prepaid label. The brands we buy and our expiration standards are the same either way; the real difference is when and how you're paid. Here’s how free mail-in works, step by step.