Boss GKC-AD Analog-to-Digital GK Converter
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Why this number?
The typical used price is the median of 18 used sales observed in the last 24 months, with outliers removed and the figure rounded. An observed sale is often the last asking price rather than a confirmed hammer price.
| Typical used price | €130 | median sold, rounded |
| Most sold between | €120–€130 | 25th to 75th percentile, same window |
| Window | last 24 months | the tightest of 90 days, 6 months and 24 months with 8 used sales |
| Sample | 18 used sales | thin data, treat as a rough guide |
| By condition | same as typical | excellent, median of 10 sales, same window |
| Time to sell | — | only counted from listings we watch start to finish; not enough yet |
| Live asks | €196 | typical ask across 10 listings, 51% above typical used |
| Outliers | dropped | beyond 10× the product’s own median: bundles, parts, typos |
| All-time | €130 | 18 used sales, 2024–2026; not used for deals |
| Sales on record | 39 | all-time, all platforms |
Typical prices are rounded (to 5 / 10 / 50 / 100 by size, in whichever currency you read); asks and the chart are exact. As of 20 October 2026. Full method, including what each badge means
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.
Reverb
4 more live · €58–€196 · typical ask €196 · most of these are new asks against a used typical
Price history
Every recorded sale, one point each: 39 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
18 used sales · last 24 months · middle half €120–€130 · thin
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 13 Oct 2026 | €120$135 as sold | excellent |  United States | Reverb | Details |
| 25 Jun 2026 | €151$176 as sold | excellent | United States | Reverb | Details |
| 28 Nov 2025 | €99$115 as sold | very good | United States | Reverb | Details |
| 4 Oct 2025 | €112$130 as sold | mint | United States | Reverb | Details |
| 2 Oct 2025 | €129$150 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 October 2026. A price is what the listing last asked, converted at that day’s rate.
Show all 39 recorded sales
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 20 May 2026 | €128$149 as sold | excellent | United States | Reverb | Details |
| 3 Apr 2026 | €159$185 as sold | excellent | United States | Reverb | Details |
| 2 Apr 2026 | €142$165 as sold | excellent | United States | Reverb | Details |
| 26 Jan 2026 | €129$150 as sold | excellent | United States | Reverb | Details |
| 15 Jan 2026 | €112$130 as sold | excellent | United States | Reverb | Details |
| 8 Dec 2025 | €120$140 as sold | excellent | United States | Reverb | Details |
| 21 Nov 2025 | €129$150 as sold | excellent | United States | Reverb | Details |
| 17 Sept 2025 | €145$169 as sold | new |  United Kingdom | Reverb | Details |
| 9 Aug 2025 | €129$150 as sold | mint | United States | Reverb | Details |
| 2 Jul 2025 | €137$160 as sold | excellent | United States | Reverb | Details |
| 2 Jun 2025 | €190$220 as sold | mint | United States | Reverb | Details |
| 28 May 2025 | €150$175 as sold | mint | United States | Reverb | Details |
| 16 May 2025 | €190$220 as sold | mint | United States | Reverb | Details |
| 24 Apr 2025 | €173$200 as sold | mint | United States | Reverb | Details |
| 13 Mar 2025 | €86$100 as sold | excellent | United States | Reverb | Details |
| 17 Feb 2025 | €181$203 as sold | mint | United States | Reverb | Details |
| 21 Jan 2025 | €190$220 as sold | new | United States | Reverb | Details |
| 6 Jan 2025 | €129$150 as sold | mint | United States | Reverb | Details |
| 29 Oct 2024 | €122$142 as sold | mint | United States | Reverb | Details |
| 26 Oct 2024 | €125$146 as sold | mint |   Cyprus | Reverb | Details |
| 23 Jul 2024 | €131$152 as sold | excellent | United Kingdom | Reverb | Details |
| 18 Jul 2024 | €189$220 as sold | mint | United States | Reverb | Details |
| 18 Jul 2024 | €189$220 as sold | mint | United States | Reverb | Details |
| 20 Jan 2024 | €147$170 as sold | excellent | United States | Reverb | Details |
| 30 Nov 2023 | €171$199 as sold | new | United States | Reverb | Details |
| 28 Sept 2023 | €172$200 as sold | new | United States | Reverb | Details |
| 28 Aug 2023 | €187$218 as sold | new |  Canada | Reverb | Details |
| 10 Aug 2023 | €187$218 as sold | new | Canada | Reverb | Details |
| 10 Aug 2023 | €187$218 as sold | new | Canada | Reverb | Details |
| 5 Aug 2023 | €189$220 as sold | new | United States | Reverb | Details |
| 2 Aug 2023 | €189$220 as sold | new | United States | Reverb | Details |
| 1 Aug 2023 | €189$220 as sold | new | United States | Reverb | Details |
| 1 Aug 2023 | €189$220 as sold | new | United States | Reverb | Details |
| 21 Jul 2023 | €190$220 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 October 2026. A price is what the listing last asked, converted at that day’s rate.
Cheapest live: United States €58 · before shipping
In one paragraph
The page's figures as one paragraph, assembled for quoting; not written by hand.
Sellers are asking a median of €196 for the Boss GKC-AD Analog-to-Digital GK Converter today, 51% over the €130 it actually sells for (18 recorded sales, last 24 months; most sold between €120 and €130). There are 10 listings live right now across Reverb, from €58 asking. Figures computed 20 October 2026 by Doirado from cross-platform listing data.