Prices

What is "Price"?
The median trading price over that time period. Half of all trades were above this price, half were below. This gives you a better idea of what an item is actually worth than looking at one single trade, which could be someone overpaying or dumping cheap.

Why doesn't the price match what I see in-game?
The in-game market shows the last single trade price or the guide price. The prices on this page are median values calculated from all recent trades, which filters out outliers. If someone sold an item significantly under or above market value, that one trade won't drag the median down.

What is "Current Price"?
The price of the most recent completed trade for this item. This is a single data point and can be an outlier — use the median prices for a better picture.

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Change Metrics

What does "Change" mean?
How much the typical price has moved over that time period. For example, "Change 7d = +12%" means the median price now is 12% higher than the median price was 7 days ago.

What does "Period vs Prior" mean?
This compares the average price of the entire period against the average price of the previous equal-length period. For example, "Period vs Prior 7d" compares the average of the last 7 days against the average of the 7 days before that.

Why do "Change" and "Period vs Prior" show different numbers?
They measure different things. "Change" is a point-to-point comparison — price now vs price then. "Period vs Prior" compares two whole time windows. They can even show opposite signs. For example, an item that crashed and then recovered might show a positive Change (price is back up) but a negative Period vs Prior (the overall average of this week is still lower than last week's average because the crash dragged it down).

Which one should I use?

• Use Change if you want to know "has this item gone up or down recently?" — this is what most players care about
• Use Period vs Prior if you want to understand broader momentum — useful for spotting items that are slowly trending up or down over weeks even if day-to-day prices look flat

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Trends

What do the trend arrows mean?
Each period is split in half and the average price of each half is compared. If the second half is significantly higher, you see an upward arrow. If lower, downward. If roughly the same, a flat line. It tells you the direction of movement within that period, not just the start vs end.

What does trend strength mean?
How strong the trend is on a scale of 0-100. A small arrow means prices moved slightly in that direction. A large arrow means a strong, sustained move. Below 10 is basically noise.

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Volume

What does volume mean?
The total number of items traded during that period. High volume means the item is actively traded and you'll likely get your buy/sell filled quickly. Low volume means it might sit in the market for a while.

Why does an item show 0 volume?
Nobody has traded it recently. The item might be too niche, too expensive, or simply not in demand right now.

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"No data" Values

Why does a column show "No data"?
There isn't enough trading history to calculate that metric yet. For example, a newly tradeable item with only 5 days of data won't have 7d, 30d, or 90d values. The data will fill in as more trading history accumulates.

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Data Freshness

How often does the data update?
Prices, volumes, and changes you see on item pages update every 5 minutes. The historical data used for charts and long-term statistics is recorded every 15 minutes. Trends and other advanced metrics update every 2 hours.