Boss SY-300 Guitar Synthesizer
pedal
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Why this number?
The typical used price is the median of 10 used sales observed in the last 90 days, 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 | €300 | median sold, rounded |
| Most sold between | €280–€320 | 25th to 75th percentile, same window |
| Window | last 90 days | the tightest of 90 days, 6 months and 24 months with 8 used sales |
| Sample | 10 used sales | ok sample |
| 90-day change | +0% | vs the 90 days before |
| Time to sell | — | only counted from listings we watch start to finish; not enough yet |
| Sell-through | 0% | 8 watched listings resolved, 6 months |
| Didn’t sell here | €380 | median ask of 8 listings that ended without a sale, 6 months, 27% above typical used; all from Japan; 8 withdrawn by the seller |
| Live asks | €677 | typical ask across 47 listings, 126% above typical used |
| Outliers | dropped | beyond 10× the product’s own median: bundles, parts, typos |
| All-time | €360 | 855 used sales, 2015–2026; not used for deals |
| Sales on record | 985 | 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 19 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.
2 local pickup ads in Germany, on Kleinanzeigen. Showing 2 local pickup ads in Germany, on Kleinanzeigen. Local pickup near you, in Germany: 2 ads on Kleinanzeigen.
eBay United States
Reverb
41 more live · €359–€891 · typical ask €677 · most of these are new asks against a used typical
- €35920% over typicalexcellent ·
United Kingdom · Reverb · confirmed 18 h ago - €35920% over typicalgood ·
Japan · eBay Germany · confirmed 14 h ago - €36120% over typicalgood · Japan · eBay Germany · confirmed 14 h ago
- €37425% over typicalgood ·
United States · eBay United States · confirmed 13 h ago - €37926% over typicalgood · Japan · eBay Germany · confirmed 6 days ago
- €39331% over typicalparts · Japan · eBay Germany · confirmed 5 days ago
- €39632% over typicalnew · Japan · eBay Germany · confirmed 14 h ago
- €39632% over typicalvery good · United States · Reverb · confirmed 6 h ago
- €39732% over typicalnew · Japan · eBay United States · confirmed 9 h ago
- €43445% over typicalvery good · United Kingdom · Reverb · confirmed 6 h ago
31 more · €487–€891 · United States, Canada, Japan, Italy and 3 more
- €48762% over typicalnew · Japan · eBay Germany · confirmed 14 h ago
- €59097% over typicalnew ·
Canada · Reverb · confirmed 6 h agocheck this is the same pedal - €59197% over typicalexcellent · Canada · Reverb · confirmed 6 h agocheck this is the same pedal
- €605102% over typicalgood · Japan · eBay Germany · confirmed 3 days agocheck this is the same pedal
- €623108% over typicalexcellent · United States · Reverb · confirmed 8 h agocheck this is the same pedal
- €641114% over typicalnew ·
Italy · Reverb · confirmed 6 h agocheck this is the same pedal - €659120% over typicalnew · Italy · Reverb · confirmed 6 h agocheck this is the same pedal
- €677126% over typicalexcellent · United States · Reverb · confirmed 6 h agocheck this is the same pedal
- €679126% over typicalnew ·
Germany · eBay Germany · confirmed 14 h agocheck this is the same pedal - €706135% over typicalexcellent · United States · Reverb · confirmed 6 h agocheck this is the same pedal
- €732144% over typicalexcellent ·
Spain · Reverb · confirmed 6 h agocheck this is the same pedal - €755152% over typicalnew · Canada · Reverb · confirmed 6 h agocheck this is the same pedal
- €755152% over typicalnew · Canada · Reverb · confirmed 6 h agocheck this is the same pedal
- €755152% over typicalnew · Canada · Reverb · confirmed 6 h agocheck this is the same pedal
- €770157% over typicalgood · United States · eBay United States · confirmed 13 h agocheck this is the same pedal
- €784161% over typicalgood · United States · eBay United States · confirmed 13 h agocheck this is the same pedal
- €794165% over typicalexcellent · United States · Reverb · confirmed 6 h agocheck this is the same pedal
- €794165% over typicalnew · United States · eBay United States · confirmed 13 h agocheck this is the same pedal
- €802167% over typicalnew · United States · Reverb · confirmed 6 h agocheck this is the same pedal
- €802167% over typicalexcellent · United States · Reverb · confirmed 6 h agocheck this is the same pedal
- €832177% over typicalnew · United Kingdom · eBay Germany · confirmed 6 days agocheck this is the same pedal
- €882194% over typicalnew · United States · Reverb · confirmed 6 h agocheck this is the same pedal
- €882194% over typicalmint · United States · Reverb · confirmed 6 h agocheck this is the same pedal
- €882194% over typicalnew · United States · eBay United States · confirmed 13 h agocheck this is the same pedal
- €891197% over typicalnew · United States · eBay United States · confirmed 13 h agocheck this is the same pedal
- €891197% over typicalnew · United States · Reverb · confirmed 6 h agocheck this is the same pedal
- €891197% over typicalnew · United States · Reverb · confirmed 6 h agocheck this is the same pedal
- €891197% over typicalnew · United States · Reverb · confirmed 6 h agocheck this is the same pedal
- €891197% over typicalnew · United States · Reverb · confirmed 6 h agocheck this is the same pedal
- €891197% over typicalnew · United States · eBay United States · confirmed 13 h agocheck this is the same pedal
- €891197% over typicalnew · United States · Reverb · confirmed 6 h agocheck this is the same pedal
Price history
What it sold for, quarter by quarter, since Oct 2015: 853 sales in quarters with at least three, and the bars along the floor show how many each quarter. The shaded band is where the middle half of sales landed.
Recent sales by listing date
10 used sales · last 90 days · middle half €280–€320 · ok
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 11 Oct 2026 | €197$221 as sold | good | United States | Reverb | Details |
| 10 Oct 2026 | €448$504 as sold | very good | Italy | Reverb | Details |
| 1 Oct 2026 | €312$350 as sold | excellent | United States | Reverb | Details |
| 28 Sept 2026 | €265$297 as sold | very good | United States | Reverb | Details |
| 23 Aug 2026 | €397$444 as sold | excellent | Germany | 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 the last 50 of 985 recorded sales
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 5 Sept 2026 | €308$345 as sold | very good | United States | Reverb | Details |
| 20 Aug 2026 | €322$375 as sold | excellent | United States | Reverb | Details |
| 14 Aug 2026 | €296$345 as sold | excellent | United States | Reverb | Details |
| 8 Aug 2026 | €301$350 as sold | excellent | United States | Reverb | Details |
| 5 Aug 2026 | €268$300 as sold | very good | United States | Reverb | Details |
| 16 Jul 2026 | €279$325 as sold | very good | United States | Reverb | Details |
| 13 Jul 2026 | €317$355 as sold | excellent | United States | Reverb | Details |
| 12 Jul 2026 | €288$335 as sold | very good | United States | Reverb | Details |
| 11 Jul 2026 | €344$400 as sold | very good | United States | Reverb | Details |
| 6 Jul 2026 | €322$375 as sold | excellent | United States | Reverb | Details |
| 19 Jun 2026 | €240$280 as sold | excellent | United States | Reverb | Details |
| 15 Jun 2026 | €291$339 as sold | very good | United States | Reverb | Details |
| 14 Jun 2026 | €281$315 as sold | very good | United States | Reverb | Details |
| 10 Jun 2026 | €258$300 as sold | very good | United States | Reverb | Details |
| 9 Jun 2026 | €383$446 as sold | excellent | United Kingdom | Reverb | Details |
| 6 Jun 2026 | €438$510 as sold | mint | Germany | Reverb | Details |
| 30 May 2026 | €240$279 as sold | very good | United States | Reverb | Details |
| 27 May 2026 | €289$335 as sold | good | Japan | Reverb | Details |
| 27 May 2026 | €387$451 as sold | very good | Canada | Reverb | Details |
| 17 May 2026 | €353$411 as sold | very good |  France | Reverb | Details |
| 16 May 2026 | €287$334 as sold | excellent | United States | Reverb | Details |
| 11 May 2026 | €426$496 as sold | excellent | United Kingdom | Reverb | Details |
| 29 Apr 2026 | €383$446 as sold | excellent | United Kingdom | Reverb | Details |
| 10 Apr 2026 | €257$299 as sold | very good | United States | Reverb | Details |
| 8 Apr 2026 | €275$320 as sold | very good | United States | Reverb | Details |
| 17 Mar 2026 | €236$275 as sold | good | United States | Reverb | Details |
| 10 Mar 2026 | €438$510 as sold | excellent |  Poland | Reverb | Details |
| 9 Mar 2026 | €307$357 as sold | excellent | United States | Reverb | Details |
| 13 Feb 2026 | €267$311 as sold | very good | United States | Reverb | Details |
| 28 Jan 2026 | €268$300 as sold | good | United States | Reverb | Details |
| 28 Jan 2026 | €150$175 as sold | very good | United States | Reverb | Details |
| 24 Jan 2026 | €258$300 as sold | very good | United States | Reverb | Details |
| 23 Jan 2026 | €344$401 as sold | excellent | Spain | Reverb | Details |
| 12 Jan 2026 | €281$327 as sold | excellent | United States | Reverb | Details |
| 29 Dec 2025 | €258$300 as sold | good | United States | Reverb | Details |
| 28 Dec 2025 | €292$340 as sold | excellent |  Belgium | Reverb | Details |
| 22 Dec 2025 | €312$363 as sold | excellent | Belgium | Reverb | Details |
| 15 Dec 2025 | €268$300 as sold | excellent | United States | Reverb | Details |
| 14 Dec 2025 | €240$280 as sold | very good | United States | Reverb | Details |
| 5 Dec 2025 | €308$359 as sold | very good | United States | Reverb | Details |
| 2 Dec 2025 | €344$400 as sold | good | United States | Reverb | Details |
| 20 Nov 2025 | €275$320 as sold | very good | United States | Reverb | Details |
| 19 Nov 2025 | €468$545 as sold | excellent | France | Reverb | Details |
| 18 Nov 2025 | €288$335 as sold | very good | United States | Reverb | Details |
| 9 Nov 2025 | €248$289 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.
Cheapest live: Japan €303 · United Kingdom €320 · United States €356 · Canada €590 · 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 €677 for the Boss SY-300 Guitar Synthesizer today, 126% over the €300 it actually sells for (10 recorded sales, last 90 days; most sold between €280 and €320). There are 47 listings live right now across eBay United States, Reverb, eBay Germany, from €303 asking. Figures computed 19 October 2026 by Doirado from cross-platform listing data.