Every marketplace tells you its own prices. Reverb’s guide sees Reverb. eBay’s sold listings see eBay. Nobody sees the whole market at once, so nobody really knows what a piece of gear is worth. We built the engine that does, and we keep building it.
A hard problem, worked at every day
The used-gear market is scattered across marketplaces, countries and currencies, and none of them show the whole picture. Listings vanish, sellers mislabel, the same model wears five names, and a sale on one site never meets its twin on another. Doirado watches Reverb and eBay around the clock, in Europe and the United States, with the new prices at Thomann beside them, and reads the local classifieds in the countries it covers, shown apart to the readers who can go and pick the thing up. It resolves all of it into one catalog of over 380,000 products and 15.6 million recorded sales, every price made comparable across borders and shown in the currency you choose. It is slow, unglamorous work, and it is the only way to a number you can stand behind.
The serial checker nobody else has
Type a serial and Doirado dates it: 164 brands across guitars and basses, pianos, amplifiers, synths and pedals, drums and microphones, plus the date codes stamped on pots, speakers and transformers. One place, every instrument, each read against its maker’s own published scheme.
Then it does what no dating site and no price guide can. It checks that exact serial against our millions of listings: whether it has been advertised before, where, when and at what ask. It tells you what the model is worth right now and how many are for sale. And when a serial’s factory or era cannot be the model it is listed as, it says so. Nobody else holds the serials and the market in one place, so nobody else can do this. It is a record of where a number has been advertised, not a claim about who owned an instrument.
The people and the machinery
Doirado is built by people who are obsessive about music gear and who spent years in the software industry before this. That combination matters, because this is not a problem you solve with a spreadsheet. It takes frontier AI models reading every listing, photo and description, and serious, sustained computing power running day and night to match millions of ads to one catalog, catch the duplicates, read the serials and keep every number current. Until very recently this was close to impossible to do at all. It is still hard, and that is exactly why nobody else has done it.
Why you can trust the numbers
Because we show our work. Every price carries a “why these numbers?” that opens the receipts: how many sales, over what window, computed how. When we do not have enough data to say something honestly, we say nothing. Most price guides do the opposite on both counts.
Start anywhere: search your gear, check a serial, or see what’s going cheap right now. The full methodology is written up here.
How Doirado is paid for
Doirado is free to use, with no paywall and no sign-up. The rest is paid for by readers who find the site useful.
Who runs Doirado
Doirado is built and run in Europe, and the site is hosted there. It is independent: no marketplace, shop or brand pays for placement, and none of them can change a number. Some outbound links may be affiliate links, which is disclosed at the foot of every page when it applies.
Something wrong on a page? Every product, listing and family carries a “this is wrong” button, and those reports go straight into the curation queue. For anything else, including press, data and marketplace questions, use the contact form. What the site keeps about you, which is very little, is written up on the privacy page.