Boss KTN-AIR EX
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Not enough sold data for a typical price — 10 sales on record all-time.
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Not enough sold data for a typical price. 6 for sale, from €475.
For sale right now
The best-priced as cards, a row of them; every other ad as a line, by ask. Each ask is the seller’s own number; the platform’s mark opens the listing. Each one says when we last confirmed it at its source: the price and availability are from that visit, so check the marketplace before you go.
eBay Germany
eBay United States
Reverb
Price history
Every recorded sale, one point each: 10 of them, placed by the day the ad went up. Too few sales to draw a trend through them without inventing one, so the points speak for themselves. Condition is mixed, so some of the spread is a mint against a fair rather than the market moving.
Recent sales by listing date
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 8 Jul 2026 | €452$526 as sold | excellent |  United States | Reverb | Details |
| 6 Oct 2025 | €559$650 as sold | mint | United States | Reverb | Details |
| 15 Feb 2025 | €477$555 as sold | new |   Italy | Reverb | Details |
| 19 Dec 2024 | €558$650 as sold | excellent | United States | Reverb | Details |
| 6 Sept 2024 | €553$644 as sold | mint | United States | Reverb | Details |
A date is the day the ad went up. Marketplaces do not publish the day a sale closed; each of these had sold by the time we recorded it, in August 2026 and September 2026. A price is what the listing last asked, converted at that day’s rate.
Show all 10 recorded sales
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 18 Jul 2024 | €558$650 as sold | mint | United States | Reverb | Details |
| 18 Jul 2024 | €558$650 as sold | mint | United States | Reverb | Details |
| 1 Nov 2023 | €601$700 as sold | new | United States | Reverb | Details |
| 4 Oct 2023 | €558$650 as sold | new | United States | Reverb | Details |
| 4 Oct 2023 | €558$650 as sold | new | United States | Reverb | Details |
A date is the day the ad went up. Marketplaces do not publish the day a sale closed; each of these had sold by the time we recorded it, in August 2026 and September 2026. A price is what the listing last asked, converted at that day’s rate.
Cheapest live: 
Japan €475 · United States €556 · before shipping
10 recorded sales of the Boss KTN-AIR EX, too few to quote a typical used price. Cheapest live €475 before shipping. Figures computed 18 October 2026.