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Galaxy S9 Plus
Galaxy S9 Plus trade-in value
What Techtree pays today, by condition and storage, and where the price is heading. Updated October 14, 2026.
What Techtree pays (Unlocked)
| Condition | 64GB | 128GB | 256GB |
|---|---|---|---|
| Brand New | $41 | $45 | $50 |
| Flawless | $31 | $35 | $40 |
| Good | $24 | $28 | $33 |
Complete, working device; a missing accessory deducts from the price and the wizard shows the exact figure. Other carriers: AT&T up to $48, Verizon up to $40, Other Carrier up to $33, T-Mobile up to $33. How we grade. How we set prices. Every model's price in one table.
Price trend
Good condition, 256GB, Unlocked, weekly averages. Techtree paid $32 (July 13, 2026) to $33 (October 12, 2026), up 3.1%. Updated October 14, 2026.
Every Galaxy S9 Plus configuration we buy (15)
| Storage / Carrier | Brand New | Flawless | Good | Fair | Minor Damage |
|---|---|---|---|---|---|
| 256GB, Unlocked | $50 | $40 | $33 | n/a | n/a |
| 256GB, AT&T | $48 | $38 | $31 | n/a | n/a |
| 128GB, Unlocked | $45 | $35 | $28 | n/a | n/a |
| 128GB, AT&T | $43 | $33 | $26 | n/a | n/a |
| 64GB, Unlocked | $41 | $31 | $24 | n/a | n/a |
| 256GB, Verizon | $40 | $30 | $26 | n/a | n/a |
| 64GB, AT&T | $38 | $28 | $22 | n/a | n/a |
| 128GB, Verizon | $36 | $26 | $21 | n/a | n/a |
| 64GB, Verizon | $36 | $26 | $18 | n/a | n/a |
| 256GB, Other Carrier | $33 | $23 | $18 | n/a | n/a |
| 256GB, T-Mobile | $33 | $23 | $18 | n/a | n/a |
| 128GB, Other Carrier | $28 | $18 | $13 | $13 | n/a |
| 128GB, T-Mobile | $28 | $18 | $13 | $13 | n/a |
| 64GB, T-Mobile | $28 | $18 | $8 | $8 | $8 |
| 64GB, Other Carrier | $23 | $13 | $8 | $8 | $8 |
Prices as of October 14, 2026 for a complete, working device in each condition; the wizard applies any accessory deduction. Configurations Techtree does not buy are not listed.
- Graded the same waySame check for every device
- Shown what we foundPhotos before any change
- You decideAccept, re-evaluate or free return
Selling your Galaxy S9 Plus: FAQs
The questions sellers ask most, answered plainly.
How much is a Galaxy S9 Plus worth today?
As of October 14, 2026, Techtree pays $24 to $50 for a Galaxy S9 Plus, depending on storage, carrier, condition and included accessories. A complete, working one in good condition is worth up to $33. Our price for a good-condition unit is up 3.1% over the last 87 days. Values for most devices fall over time, fastest in the weeks after a successor launches.
How much is a used Galaxy S9 Plus worth in good condition?
As of October 14, 2026, Techtree pays up to $33 for a Galaxy S9 Plus in good condition (light wear, fully working), by storage: 64GB $24, 128GB $28, 256GB $33. The price is locked for 21 days from your quote, shipping is free, and payment goes out 1 to 2 business days after inspection.
Which Galaxy S9 Plus is this page for?
Galaxy S9 Plus: released March 2018, chip Snapdragon 845, display 6.2" QHD+ Super AMOLED, storage options 64GB / 128GB / 256GB, RAM 6GB. Techtree buys every storage size listed in the price table, on Unlocked, AT&T, Verizon, Other Carrier, T-Mobile.
Is a locked Galaxy S9 Plus worth anything?
Not to Techtree: every quote requires the device to be free of activation lock (Find My or Factory Reset Protection), carrier finance locks and blacklisting, and the wizard will not make an offer otherwise. Sign out of your accounts, turn the locks off, pay off the device and remove your data before you ship, and the full price applies.
Does the carrier change what a Galaxy S9 Plus is worth?
Yes. The price table is for Unlocked. On other carriers the same device fetches: AT&T up to $48, Verizon up to $40, Other Carrier up to $33, T-Mobile up to $33. Pick the carrier in the wizard for the exact figure.
How do I find my Galaxy model?
Open Settings, About phone to see the exact model (for example Galaxy S24 Ultra). Selecting the right model keeps your quote accurate.
How do I prepare my Galaxy phone?
Back up your data, remove your Google and Samsung accounts to clear the activation lock, take out the SIM and SD card, then factory reset.
Other Galaxy S Series models we buy
Same instant quote, free shipping and 21-day price lock on every model.
Why sell with Techtree?
Plenty of options out there. Here's what you can check before you send anything.