Detailed Pricing & Availability Graphs for Unique Items during OMR/HC

xpost from reddit

I thought it would be interesting to track the availability and pricing of Unique Items during the One Month Race series, so I wrote a program to pull information on Unique Items in shops from poe.xyz.is every six hours during the race (only items with buyouts were logged).

I have parsed and graphed this data, and it is available here:

One Month Race: http://poe.pwx.me/uniq/omr

One Month race Hardcore: http://poe.pwx.me/uniq/omrhc

Quantity Graphs are simple column charts which show the number of available items with a buyout at each point in time. You may also view stacked column charts for each type of item (Body Armor, Amulet, etc.). In the stacked charts you may click on an item in the Legend to hide it. These would be a lot more interesting if it went over 99, I didn't expect so many to hit 99 so fast - kinda silly in retrospect.

Pricing Graphs are multi-series bubble charts, with each series showing the buyout prices of the item in a specific currency. The size of each bubble reflects the quantity of items available at that price - if there are 10 items available at 2c and 25 items available at 3c, the bubble at 3c will be much larger. As these bubbles are stacked over time, it creates a sort of heat map as to the typical price of an item. In any pricing chart you may click on any currency type to hide that currency type from the graph, so if you want to see prices in only exalts you need to click all other currency types. Hovering over any bubble will give you a summary of that bubble.

Notes:

* poe.xyz.is stops returning data after 99 results, so only the first 99 results for each Unique Item was logged
* the pulls were carefully staggered, compressed, and took place over a long period of time to avoid adding any unusual load to the poe.xyz.is servers
* I messed up Mjolner's URL, so no data on that, sorry

Some Initial Conclusions:

I'll let you guys hopefully explore this data and find some cool stuff. Here are some initial conclusions I drew:

* There were less items for sale in Hardcore and they were generally more expensive
* Most items start off selling only for Chaos or Exalted Orbs, then other currency types come into play after the first few days
* Prices in general seemed to stabilize for most items by the end of the first week
* Map only items take awhile to appear. Rathpith[3] is an interesting example of this.
* Perandus Signet availability is interesting. There are a few big dips, I wonder if that's from high level players buying them up to Vaal them in quantity?

What kind of cool stuff can you guys find in this data?

Also, just to quickly respond with some common replies in the reddit thread:

You can click on a currency in the price graphs to remove that currency. So if you just want to see prices in Exalts, just click all the other currency types. The graph will re-draw itself.

I don't have any reliable historical currency value data during the OMR's to baseline against a single monetary value (i.e. exalt = 22 chaos day 1, 23 chaos day 2, etc.). That's why pricing is plotted with currency types.

Some of the other formatting issues are because I had to learn this charting software as I went along and maybe didn't do the best job, others because I wanted to display as much information as possible, etc.

If there is a demand for it I can generate some sort of .csv file for each unique as well, certainly for quantity this is easy to do.

awesome ! it gives us an idea of the global vision xD thx !