What do depth, spread and turnover mean?

Depth is the units listed now. Spread is the gap between the 25th and 75th percentile of the listings at the latest scan, as a share of the median: a wide spread means the price you get depends on timing. Turnover is how much of the shelf changes a day, so a high turnover means the item sells.

What is a supply shock on the auction house?

The newest day of scans shows an item listed in a quantity two standard deviations away from its previous 30 days. Flooded means far more than usual is listed, and the price tends to sag; drained means the shelf emptied, and the price tends to climb.

Market structure

Pick a market. Every item shows how much of it you can move, how fast its shelf turns over, and whether its supply just changed.

For the size of each house as a whole, see the economy of every megaserver.

Current market: PvP Horde CN. This browser opens every tool here until you pick another. Address for this market: ahledger.com/structure?market=forever/pvp/horde/cn

1MarketStructure needs a few days of scans on the market.

▸How this is worked out

Depth is units listed now. Spread is the gap between the 25th and 75th percentile of the book at the most recent scan, as a share of that scan's median. Turnover is how much of the shelf changes per day. A shock is the newest day's quantity sitting two standard deviations from the 30 days before it.

Only a day or two of history so far, so turnover and shocks are provisional. The sample column says how many days sit behind each row.

Depth and turnover · PvP Horde CN

Item	Depth	On the house	Spread	Turnover	Volatility	Days
Chromatic Sword	3	9,999g	103%	100%	72%	2
Taran Icebreaker	1	6,888g	0%	-	-	1
Parrot Cage (Hyacinth Macaw)	5	3,000g	11%	67%	21%	2
Staff of Jordan	12	2,040g	17%	67%	34%	2
Gut Ripper	5	1,490g	0%	67%	45%	2
Recipe: Elixir of the Mongoose	9	1,301g	39%	91%	22%	2
Boots of Avoidance	16	1,295g	30%	143%	66%	2
Tiny Emerald Whelpling	4	1,196g	67%	0%	21%	2
Item 287005	14	1,132g	67%	35%	18%	2
Underworld Band	21	1,081g	95%	109%	51%	2
Precisely Calibrated Boomstick	3	1,007g	21%	-	-	1
First Mate Hat	2	1,000g	0%	-	-	1
Edgemaster's Handguards	1	1,000g	0%	-	-	1
A Little Somethin'	20	1,000g	88%	145%	117%	2
Fiery War Axe	8	960g	11%	67%	7%	2
The Green Tower	16	960g	35%	59%	16%	2
Runecloth	4,762	951g 92s	80%	179%	29%	2
Dazzling Longsword	14	925g 40s	30%	43%	54%	2
Stockade Pauldrons	1	888g 31s	0%	-	-	1
Robes of Insight	7	840g	29%	120%	59%	2
Freezing Band	2	800g	22%	-	-	1
Flurry Axe	3	799g 35s	5%	100%	114%	2
Nightblade	8	720g	21%	29%	48%	2
Large Glimmering Shard	866	666g 82s	2%	34%	5%	2
Item 287010	7	620g 90s	20%	120%	70%	2
Executioner's Cleaver	6	600g	70%	-	-	1
Kang the Decapitator	1	598g 69s	0%	-	-	1
Golden Pearl	203	584g 64s	45%	75%	36%	2
Blueprint: Expert Campfire	2	577g 2s	901%	-	-	1
Hurricane	2	576g	27%	-	-	1
Magenta Dye	887	567g 68s	54%	76%	55%	2
Pattern: Devilsaur Leggings	2	560g	7%	-	-	1
Pattern: Mooncloth Bag	3	542g 64s	48%	-	-	1
Journeyman's Backpack	74	541g 68s	1%	12%	25%	2
Devilsaur Leather	54	540g	1%	125%	0%	2
Globe of Water	99	539g 5s	48%	155%	51%	2
Mithril Ore	9,831	531g 85s	17%	61%	17%	2
Axe of Rin'ji	3	510g 63s	47%	100%	77%	2
Scroll of Liminal Passage	939	507g 6s	45%	42%	104%	2
Iron Bar	10,797	495g 58s	9%	100%	10%	2
Rosecap	1,549	463g 15s	188%	91%	69%	2
Stranglevine	186	457g 52s	12%	101%	20%	2
Tiny Crimson Whelpling	5	446g 90s	4%	100%	7%	2
Schematic: Goblin Rocket Boots	11	440g	15%	0%	43%	2
Steel Bar	2,532	430g 44s	41%	5%	35%	2
Iron Ore	10,540	408g 95s	13%	121%	11%	2
Recipe: Greater Stoneshield Potion	4	402g 44s	1%	67%	47%	2
Schematic: Thorium Shells	4	399g 4s	0%	120%	0%	2
Pattern: Storm Gauntlets	1	388g 51s	0%	-	-	1
Frilled Lichen	1,424	388g 46s	3%	62%	25%	2
Heavy Stone	10,168	385g 36s	15%	58%	2%	2
Wastewander Water Pouch	1,592	382g 8s	50%	60%	29%	2
Silver Ore	4,144	370g 88s	15%	115%	3%	2
Blackskull Shield	4	360g	21%	29%	35%	2
Item 287013	12	360g	7%	100%	29%	2
Gloves of Holy Might	9	349g 92s	10%	57%	34%	2
Mithril Bar	5,567	347g 93s	2%	34%	10%	2
Scarlet Boots	9	342g	47%	48%	29%	2
Pattern: Swift Boots	129	341g 85s	134%	86%	131%	2
Bronze Bar	17,221	340g 97s	4%	9%	10%	2

A tight spread with high depth is a market you can move size in. A wide spread with low depth moves against you the moment you buy.

Day of week

Day	Price index	Listings index	Days
Sunday	1.001	0.742	1
Monday	0.999	1.258	1

Each day is indexed against the week around it, item by item, so neither an expensive item nor a market that drifted over the quarter can tilt the table, and the seven are then centred so an average week reads 1.000. Under 1.000 is a cheap day to buy; over 1.000 is a good day to sell. The Days column counts the days behind each figure, not the readings, so read it once there are several weeks there.

Common questions

What do depth, spread and turnover mean?: Depth is the units listed now. Spread is the gap between the 25th and 75th percentile of the listings at the latest scan, as a share of the median: a wide spread means the price you get depends on timing. Turnover is how much of the shelf changes a day, so a high turnover means the item sells.
What is a supply shock on the auction house?: The newest day of scans shows an item listed in a quantity two standard deviations away from its previous 30 days. Flooded means far more than usual is listed, and the price tends to sag; drained means the shelf emptied, and the price tends to climb.