Sigma SDM-18 — Guitar Resale Value
Acoustic GuitarsWhat a used Sigma SDM-18 sells for on Reverb (median of 2 recent listings).
Sigma SDM-18 value — Used $903.74. Prices updated August 2026.
Live on eBay right now
Expired listings — price reference
Sigma Guitars Guitar S000P-10E New Crossroad Series Solid Wood / *DISPLAY*
Sigma Guitars S000M-15E Solid Wood + Fishman Presys + Softcase *New*
eBay removes ended listings after ~90 days — we keep the prices. Look up finds current listings for the same item.
Price data verified against · 1
Item details
- Brand
- Sigma
- Make
- Sigma
- Model
- SDM-18
- Year
- 2016–2025
- Finishes seen
- Natural Gloss
- Used range
- $804.11 – $903.74
- Sample size
- 2 listings
Sigma SDM-18 resale value
The used Sigma SDM-18 has a median Reverb asking price of $903.74, ranging from $804.11 to $903.74 across 2 current listings.
What drives the price
For a used guitar, year, finish, originality (no mods/refins), and case move the price most. Vintage and limited runs command a premium; player-grade and modified examples sell for less.
Price guide
What this actually trades for — sold values by condition vs. what sellers are asking today
| Condition | Value | Based on |
|---|---|---|
| Used | $903.74 | eBay sold comps |
| Live asking — low / typical / high | $250 / $719.41 / $1,084 | 9 live eBay listings ↗ |
Market check: As of August 19, 2026, 9 live eBay listings ask $250.00–$1,084.31 (median $719.41). Asking prices sit about 20% below the typical sold value of $903.74 — a window worth checking for buyers.
Frequently asked questions
- What is the typical price range for a Sigma SDM-18?
- The Sigma SDM-18 is currently listed in the used range of $798.93 to $897.92.
- What years is the Sigma SDM-18 available?
- This model has been produced between 2016 and 2025.
- What finishes are available for the SDM-18?
- The Natural Gloss finish has been seen for this acoustic guitar.
