Korg RK-100S BK 37-Key Keytar w/ Built-In MMT Digital Synth
keyboard
Has sold for €590 over 2015–2026, across 52 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: 63 of them, placed by the day the ad went up. The line follows the middle of the sales around each point, with the middle half behind it, and breaks wherever nothing sold nearby. 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 |
|---|---|---|---|---|---|
| 21 Jul 2026 | €386$449 as sold | excellent |  United States | Reverb | Details |
| 30 Jan 2026 | €395$460 as sold | very good | United States | Reverb | Details |
| 4 Jan 2026 | €598$695 as sold | mint | United States | Reverb | Details |
| 30 Jun 2025 | €514$599 as sold | very good | United States | Reverb | Details |
| 14 Dec 2023 | €408$475 as sold | excellent | 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 Marketplaces do not publish the day a sale closed; each of these had sold by the time we recorded it, in August 2026 and September 2026.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 the last 50 of 64 recorded sales
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 14 Oct 2024 | €301$350 as sold | very good | United States | Reverb | Details |
| 4 Mar 2023 | €429$499 as sold | mint | United States | Reverb | Details |
| 20 Apr 2022 | €733$850 as sold | very good |   Italy | Reverb | Details |
| 27 Mar 2022 | €257$299 as sold | fair | United States | Reverb | Details |
| 20 Dec 2021 | €554$645 as sold | mint | United States | Reverb | Details |
| 28 Nov 2021 | €425$495 as sold | very good | United States | Reverb | Details |
| 17 Nov 2021 | €644$750 as sold | mint | United States | Reverb | Details |
| 8 Sept 2021 | €472$550 as sold | fair | United States | Reverb | Details |
| 2 Sept 2021 | €515$600 as sold | very good | United States | Reverb | Details |
| 17 Aug 2021 | €644$750 as sold | very good | United States | Reverb | Details |
| 4 Aug 2021 | €871$1,015 as sold | new | Italy | Reverb | Details |
| 29 Apr 2021 | €859$1,000 as sold | mint | United States | Reverb | Details |
| 21 Dec 2020 | €709$825 as sold | excellent |  Japan | Reverb | Details |
| 3 Dec 2020 | €772$899 as sold | mint | United States | Reverb | Details |
| 30 Nov 2020 | €301$350 as sold | good | United States | Reverb | Details |
| 29 Nov 2020 | €429$500 as sold | excellent | United States | Reverb | Details |
| 14 Oct 2020 | €601$700 as sold | excellent | United States | Reverb | Details |
| 1 Aug 2020 | €472$549 as sold | excellent | United States | Reverb | Details |
| 25 Jul 2020 | €425$495 as sold | good | United States | Reverb | Details |
| 23 Jun 2020 | €515$600 as sold | excellent | United States | Reverb | Details |
| 11 May 2020 | €472$550 as sold | good | United States | Reverb | Details |
| 22 Dec 2019 | €601$700 as sold | excellent | United States | Reverb | Details |
| 4 Dec 2019 | €387$450 as sold | fair | United States | Reverb | Details |
| 20 Nov 2019 | €601$700 as sold | good | United States | Reverb | Details |
| 20 Nov 2019 | €623$725 as sold | good | United States | Reverb | Details |
| 27 Jun 2019 | €816$950 as sold | excellent | United States | Reverb | Details |
| 28 May 2019 | €776$899 as sold | new | United States | Reverb | Details |
| 28 May 2019 | €850$990 as sold | excellent | United States | Reverb | Details |
| 23 May 2019 | €730$850 as sold | excellent | United States | Reverb | Details |
| 23 Mar 2019 | €747$870 as sold | mint | United States | Reverb | Details |
| 15 Mar 2019 | €301$350 as sold | fair | United States | Reverb | Details |
| 4 Mar 2019 | €898$1,045 as sold | mint | United States | Reverb | Details |
| 13 Feb 2019 | €859$1,000 as sold | mint | United States | Reverb | Details |
| 29 Jan 2019 | €773$900 as sold | very good | United States | Reverb | Details |
| 19 Jan 2019 | €432$500 as sold | very good | United States | Reverb | Details |
| 11 Jan 2019 | €600$699 as sold | very good | United States | Reverb | Details |
| 6 Jan 2019 | €730$850 as sold | mint | United States | Reverb | Details |
| 19 Dec 2018 | €605$700 as sold | excellent | United States | Reverb | Details |
| 11 Dec 2018 | €1,159$1,350 as sold | mint | United States | Reverb | Details |
| 10 Nov 2018 | €446$519 as sold | mint | United States | Reverb | Details |
| 16 Jul 2018 | €275$320 as sold | very good | United States | Reverb | Details |
| 20 Jun 2018 | €1,074$1,250 as sold | very good | United States | Reverb | Details |
| 25 May 2018 | €1,353$1,575 as sold | mint | United States | Reverb | Details |
| 1 Feb 2018 | €1,588$1,849 as sold | mint | United States | Reverb | Details |
| 16 Dec 2017 | €644$750 as sold | excellent | 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.
52 recorded sales of the Korg RK-100S BK 37-Key Keytar w/ Built-In MMT Digital Synth from 2015–2026, all-time around €590. Too few in the last two years to quote a typical used price. Figures computed 20 October 2026.