Sell Medtronic Guardian 4 sensors and Mio Advance infusion sets in Dallas–Fort Worth
Medtronic pump users tend to have the most leftover supplies of anyone, because sensors and infusion sets ship in ninety-day quantities and a pump change leaves all of it unusable. We buy the two Medtronic items with a real resale market: Guardian 4 sensors in sealed five-packs, and Mio Advance infusion sets in sealed ten-packs.
For Guardian 4, the box with REF MMT-7040A brings the top offer. Other Guardian 4 five-pack REFs are bought at a little less. For Mio Advance we buy both the 6mm and 9mm cannula lengths on the 23-inch tubing (MMT-242A and MMT-243A). Guardian 3 sensors, reservoirs, and older Quick-set or Silhouette sets we don't buy.
- Cash in person anywhere within 50 miles of Dallas
- Free prepaid shipping label for mail-in from anywhere in Texas and all 50 states
- Hablamos español

What we buy and what we pass on
We buy
- Guardian 4 sensor 5-pack, REF MMT-7040A
- Guardian 4 sensor 5-pack, other REFs
- Mio Advance 6mm / 23" infusion sets, 10-pack (MMT-242A)
- Mio Advance 9mm / 23" infusion sets, 10-pack (MMT-243A)
We don't buy
- Guardian 3 sensors or transmitters
- MiniMed reservoirs
- Quick-set, Silhouette, Sure-T, or other older infusion sets
- Opened boxes or boxes marked Medicare or Medicaid
How the offer is set
Nine months or more before expiration gets the top offer. Seven to eight months takes a little off, five to six months more. Under five months on Medtronic items we usually pass.
Before you text us
- The REF number is on the end of the box. For Guardian 4, MMT-7040A is the one that brings the most.
- Photograph the front, the REF, and the expiration date.
- Tell us the cannula length on Mio Advance boxes. 6mm and 9mm are priced the same but we need to know what we're picking up.
How it works
- 1
Send us what you have
Text a photo of the front of each box with the expiration date showing, or use the form on this page. A typed list works too.
- 2
We text you an offer
The offer is based on brand, count, expiration date, and box condition. The number we send is the number we pay, as long as the boxes match what you described.
- 3
Get paid
Meet us anywhere within 50 miles of Dallas and get cash on the spot after a quick look at the boxes. Mail-in sellers get a free prepaid label and are paid by Zelle or Venmo the same day the box arrives and checks out.
Get a quote for your Medtronic
Send a photo or a list and we'll text you an offer, usually within the hour during business hours. Cash when we meet, or Zelle or Venmo the day your mail-in box arrives.
Rather text? (469) 248-7159
¿Prefiere español? Envíenos un mensaje de texto y le respondemos en español.
Medtronic questions
Do you buy Guardian 3?
No. Guardian 3 has been replaced by Guardian 4 and there is no resale demand for it.
Do you buy MiniMed reservoirs?
Not at the moment. Reservoirs bring too little to quote. Infusion sets and Guardian 4 sensors are the Medtronic items we pay for.
Does it matter which pump I used?
No. Guardian 4 sensors and Mio Advance sets are the same regardless of which MiniMed pump they shipped for.
Also selling something else?
Before you sell
What supplies are worth · Box condition guide · How to photograph boxes · Short-dated and expired boxes · Is it legal in Texas?
Where we meet
We drive up to 50 miles from Dallas. Pick your city for directions and meeting spots:
Dallas · Fort Worth · Arlington · Plano · Frisco · McKinney · Denton · Irving · Garland · Grand Prairie · Mesquite · Carrollton · Richardson · Lewisville · Allen · Rockwall · Mansfield · Waxahachie · Mail-in from the rest of Texas and other states