XOR Electronics NerdSEQ MIDI I/O Expander
keyboard
Has sold for €500 over 2019–2026, across 26 used sales. Too few in the last two years for a typical price today.
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Not enough sold data for a typical price.
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.
Nothing live right now on the platforms we track.
Price history
Every recorded sale, one point each: 28 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 |
|---|---|---|---|---|---|
| 10 Sept 2026 | €401$450 as sold | excellent |  United States | Reverb | Details |
| 11 Jun 2026 | €356$400 as sold | excellent | United States | Reverb | Details |
| 14 Feb 2025 | €356$400 as sold | good | United States | Reverb | Details |
| 12 Feb 2025 | €471$529 as sold | very good |   Slovakia | Reverb | Details |
| 8 Apr 2023 | €558$625 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 Marketplaces do not publish the day a sale closed; each of these had sold by the time we recorded it, in October 2026. A price is what the listing last asked, converted at that day’s rate.
Show the last 28 of 40 recorded sales
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 3 Feb 2026 | €463$520 as sold | excellent | United States | Reverb | Details |
| 2 Dec 2025 | €445$500 as sold | excellent | United States | Reverb | Details |
| 22 Jan 2024 | €425$477 as sold | excellent |  Canada | Reverb | Details |
| 9 Nov 2023 | €508$571 as sold | excellent |  United Kingdom | Reverb | Details |
| 15 Apr 2023 | €487$547 as sold | excellent |  Belgium | Reverb | Details |
| 4 Dec 2022 | €445$500 as sold | excellent | United States | Reverb | Details |
| 19 Sept 2022 | €524$588 as sold | very good |  Netherlands | Reverb | Details |
| 24 Apr 2022 | €489$549 as sold | mint | United States | Reverb | Details |
| 9 Apr 2022 | €517$580 as sold | very good | United States | Reverb | Details |
| 6 Jan 2022 | €503$564 as sold | mint |  Estonia | Reverb | Details |
| 4 Nov 2021 | €557$625 as sold | excellent | United States | Reverb | Details |
| 23 Oct 2021 | €535$600 as sold | mint | United States | Reverb | Details |
| 14 Sept 2021 | €52$58 as sold | new | United Kingdom | Reverb | Details |
| 19 May 2021 | €517$580 as sold | excellent | United States | Reverb | Details |
| 13 Mar 2021 | €461$518 as sold | mint | United Kingdom | Reverb | Details |
| 7 Dec 2020 | €535$600 as sold | mint | United States | Reverb | Details |
| 20 Nov 2020 | €490$550 as sold | excellent | United States | Reverb | Details |
| 18 Nov 2020 | €517$580 as sold | mint | United States | Reverb | Details |
| 29 Jun 2020 | €517$580 as sold | excellent | United States | Reverb | Details |
| 21 Mar 2020 | €445$500 as sold | mint | United States | Reverb | Details |
| 12 Dec 2019 | €45$50 as sold | new | United States | Reverb | Details |
| 14 Apr 2019 | €504$565 as sold | excellent | United States | Reverb | Details |
| 9 Mar 2019 | €512$575 as sold | very good | 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 October 2026. A price is what the listing last asked, converted at that day’s rate.
26 recorded sales of the XOR Electronics NerdSEQ MIDI I/O Expander from 2019–2026, all-time around €500. Too few in the last two years to quote a typical used price. Figures computed 19 October 2026.