You may start to notice that the Retail version of Zygor’s Gold Guide is reporting a lot of items as “market stagnant”. This is because Blizzard changed the data format of the Auction House API and made some changes to how data is reported.

For those of you not aware, we use Blizzards Auction House API to pull in pricing data across all servers, crunch the numbers, and create the “Trend Data” we send out through the client. As a result of these changes on Blizzard’s end we’re having to rework our Trend Data and update the Zygor Guide Viewer to address these changes.

One of the key changes Blizzard made is that previously we were able to see individual auctions in the data, and when they sold or expired they would disappear from the data. This allowed us to “guess” at how often items were being sold to create our “demand” indicator. Now it seems Blizzard is using a new system where new auctions of the same item just get added to the existing one, causing the values to go up or down without disappearing or starting new auctions. This obviously complicates estimating demand.

We’re currently looking into some solutions and believe we should be able to keep things working reliably, but most likely the system will need to be altered in a way that relies less on these estimates.