P2P order book builder

The ad queue at every venue, side by side. Enter your price and see exactly where you would slot in at each of them.

Demo mode: sample data. Live prices turn on after deploying the Worker (API_BASE in site.config.mjs).
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Why the queue matters more than the price

A "best buy and best sell" summary answers the taker’s question: where to get it right now. The maker needs a different answer — if I post this price, where do I stand in line?

The price alone does not tell you. P2P ads sit close together: a quarter of a percent can separate first place from tenth. One kopeck can lift you five positions or change nothing at all, and no number predicts which — only the queue does.

How it is computed

Your price is slotted into each selected venue’s book exactly where it would really stand, marked with a star. The rank counts the ads priced strictly better than yours.

The side here is your role, not the visitor’s action, and the two must not be confused. The “selling” feed consists of ads a visitor buys from; joining that queue makes you the seller, and buyers pick whoever gives the coin up cheaper. The “buying” feed is the reverse: sellers go to whoever pays more.

Hence what looks odd at first: a below-market price puts you first when you are selling and last when you are buying. The rule for the chosen side is printed right under the table heading so you do not have to hold it in your head.

Next to the rank sits the gap to first place — how far the price must move to lead the queue. It is usually a surprising figure: first place is more often kopecks away than percent.

The merchant filter

A minimum order count is not decoration. An ad with the best price and three completed trades sits at the top of the book, but outbidding it means competing with someone buyers skip anyway.

Set the threshold at a hundred trades and you see a queue that bears on reality. The merchant’s order count is in the last column so the judgement stays yours, not the filter’s.

How many venues at once

Books are shown as columns, one per exchange. Four fit a laptop screen, six a large monitor; on a phone the columns scroll sideways. Choosing more than fits serves little purpose — comparison happens in pairs anyway.

How this differs from the route finder

The route finder answers the taker’s question: what to buy and where to sell right now. This page answers the maker’s: what price to post so the ad gets seen. Same data, different questions.

Frequently asked questions

What does the star in the list mean?

It is your ad at the price you entered, placed exactly where it would stand in that queue. Everything above it is priced better from the buyer’s point of view.

Why do buy and sell sort differently?

Because different things win. Buying the coin you want a lower price; selling it you want a higher one. Each side is sorted by its own rule.

What is the order-count threshold for?

So you do not compete with an ad people skip anyway. A merchant with three trades can top the book on price, and outbidding them achieves nothing.

How many ads are shown?

Up to twelve per venue — as many as the exchange itself returns on its first screen. Your ad is added to them and displaces nobody.

How often do the books refresh?

Every thirty seconds. That is enough for P2P, where ads live for minutes rather than seconds.