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Zwaptz
Your trainersworn, still goodappraise$85–$120medium confidenceopensFilm cameraCast-iron panHeadphonesBoard gameHand planeBike helmet
One item resolves to a band. Everything inside the band is something it can become.

03  ·  of five

The range is a doorway

Your thing gets a band. Everything on Zwaptz inside that band is something it can become. Pick one, offer, and if they say yes you arrange to meet.

You are never asked what your trainers are worth, and neither is anybody else.

Not one-for-one

This is not swapping your exact thing for their exact thing

The old problem with trading things directly is that it needs a coincidence: you want theirs, they want yours, at the same moment, in the same town. That coincidence almost never happens, which is why nobody trades things.

The band removes it. You are not looking for one person who wants your trainers — you are looking at everything worth roughly what they are worth, and choosing.

You see objects. Never a price tag.

The dollar figure is plumbing. It runs underneath, decides what you are shown, and gets out of the way. What you actually do is scroll through things and think I would use that.

What is near you

Never an address. Never a postcode. Never a map. Never a pin.

A rounded distance and nothing else — “about four miles away”. Your postcode works out who is near you and is shown to nobody. Why there is no map is on what’s nearby.

The Zwaptz Explore page, with a search field, a postcode field, distance choices from three miles to Anywhere, category filters, and a grid of item cards each showing a value range.
Distance is a row of choices, not a map. The postcode field is the only place a postcode appears.

Eight ways in

Four worked examples

Illustrative figures, showing how a band is read. Not records of completed swaps.

You haveBandIt becomes
A bread maker, used four times$40–$70MediumA cast-iron skillet and a stovetop coffee pot
Two children's scooters$55–$95HighA box of building bricks and a wooden train set
A road bike frame and a spare wheel$120–$190MediumA small guitar amplifier and a hard case
A folding pocket knife, no readable maker's markthe difficult one$25–$260LowNothing yet — and that is the right outcome

The difficult one

A wide band is an answer

The knife is not a failure of the valuation. It is the valuation saying, accurately, that it could not read a maker’s mark and that the difference between two readings is a factor of ten.

A single confident number there would have been worse in every way. You would have traded against it, and one of you would have been badly wrong.

All four in full are on real trades.

See what is near you

Some items on Explore are seeded examples so the categories are not bare. Every one is marked example value on its card and says on its own page that nobody appraised it.

The longer versions