One person's clutter is another's treasure
Without money, how do you know what something is worth? You could guess, but Swapster tries to give you a better answer — one based on what's actually happening on the platform right now, and what has happened in the past.
Every item on Swapster has two numbers attached to it:
MXV — Market Exchange Value
The market value of an item, based on how much demand there is for it, how much is on offer, and what similar swaps have historically been worth.
EXV — Exchange Value
Your personal value for that item — which is the MXV adjusted up or down based on your reputation as a swapper.
The Live Market
Swapster's Market page is a live view of supply and demand across the whole platform. It updates as swaps are posted, and gives everyone — buyers and sellers alike — a real-time picture of what's in demand and what's plentiful.
Live Ticker
A scrolling feed of active swaps and recent exchange rates — so you can see what's being offered and asked for right now.
Most Asked
Items where demand outstrips supply — lots of people asking, not many offering. These are high-value opportunities for anyone who has them.
Most Available
Items where supply outstrips demand — plenty on offer, fewer people asking. Good news if you're looking for one of these.
Trade History
Based on completed swaps — showing which items are traded most and at what exchange rates. This is the historical data that anchors the MXV.
The Market Ratio
Each item in the Most Asked and Most Available tables shows a ratio badge — for example 3.0×. This is the scarcity ratio: how many times more demand there is than supply (or vice versa).
A 3.0× ratio in Most Asked means three people are asking for every one person offering. It's a scarcity signal, not a price — but it directly feeds into the MXV calculation alongside historical swap data.
Alongside the ratio you'll also see the item's current MXV — the derived exchange value that blends the live ratio with historical completed swap data. These two numbers together tell the full story: the ratio shows how much pressure the market is under, and the MXV shows what that pressure translates to in exchange terms.
How the market value (MXV) is calculated
The MXV is driven by two things working together: supply and demand right now, and a historical average built up from completed swaps over time.
Supply and demand
If lots of people are asking for something and very few people are offering it, that item is in demand — and its MXV will be high. If the opposite is true and there's more on offer than people want, the MXV will be lower. It's the same logic that drives any market, just without the money.
A real example
Imagine there are 15 hours of lawn mowing being asked for across the whole platform, but only 2 hours being offered. That's a demand-to-supply ratio of 7.5 to 1 — so lawn mowing has a high MXV. It's scarce, and people want it.
Now flip it: if there are 20 old board games on offer but only 3 people asking for them, the MXV drops. Plenty of supply, not much demand.
The market is always live. Values shift as swaps are posted and completed.
Historical value
Supply and demand alone can be noisy — one unusual day could make something look far more or less valuable than it really is. So MXV is also anchored by a running historical average, built from the recorded value of every completed swap involving that item.
The more swaps that have been completed, the more reliable that average becomes — much like how a house price estimate gets more accurate the more nearby houses have recently sold. Recent swaps are also weighted slightly more heavily than older ones, so the value stays current rather than being dragged by data from years ago.
Early days
When Swapster is new, historical data is thin — so MXV leans more heavily on live supply and demand. As the community grows and more swaps complete, the historical anchor becomes stronger and the values become more reliable. The system gets smarter over time.
How it all connects
The ratio, the MXV, the EXV, and the market page are all parts of the same system. Here's how they flow together:
Swaps are posted
Every time someone posts a swap — offering something, asking for something — it adds to the live supply and demand totals on the market. This immediately shifts the market ratios.
The market ratio updates
The ratio badge on the market page reflects the live balance of asks vs offers. A high ratio means demand is outpacing supply — a low one means there's plenty available. Items with no supply at all show None offering, flagging a pure demand signal and an opportunity for anyone who has that item.
The MXV is calculated
The live ratio feeds directly into the MXV formula, blended with any historical swap data for that item. The MXV is the exchange value — what this item is worth in swap terms right now. You'll see it on the market page alongside the ratio, and on individual listings.
Your EXV is personalised
When you list an item, the MXV is adjusted by your swapper reputation to produce your EXV. A great track record nudges it up; a poor one nudges it down. New users start at neutral.
Completed swaps feed back in
When a swap completes, an exchange rate is recorded — e.g. "1 guitar ≈ 2.5 board games." These rates accumulate in the Trade History on the market page, and gradually strengthen the historical anchor in the MXV formula. Over time, values become more reliable and more community-driven.
How your reputation affects your EXV
The MXV is the same for everyone — it's the market rate. But the EXV shown on your listing is personal to you. When you post a swap, your rating as a swapper is applied to the MXV to produce your EXV.
Think of it like a seller reputation on any marketplace. A trusted seller with great reviews can command a higher price for the same item than someone with a poor track record. On Swapster, that principle works the same way — just measured in exchange value rather than cash.
| Your rating | Effect on MXV | Your EXV |
|---|---|---|
| 5 stars (excellent) | +20% boost | Higher than MXV |
| 3 stars (neutral / no history) | No adjustment | Equal to MXV |
| 1 star (poor) | −20% penalty | Lower than MXV |
If you're new to Swapster and have no rating yet, your EXV will match the MXV exactly — a neutral starting point. Build a good reputation and your listings will carry more value over time.
What this means when you're swapping
When you browse swaps, the MXV gives you a reference point for what the market considers fair. When you post your own swap, the EXV shown is yours — reflecting both what the market says the item is worth and the trust you've built as a swapper.
Neither number is a hard rule. You can still ask for whatever you like in return — Swapster won't stop a swap from happening just because the values don't line up. But the MXV and EXV are there to help you make informed decisions, and to help the people you're swapping with feel confident about the deal.
The more you swap, the better it gets
Every completed swap adds to the platform's historical data, making MXV values more accurate for everyone. A thriving community with lots of completed swaps produces a more reliable, more trustworthy value system — one that genuinely reflects what things are worth to real people.
Ready to find out what your things are worth?
Post a swap and see your EXV in action. The more the community grows, the more meaningful that number becomes.