Each entry in our item database carries the same metadata Blizzard publishes through the official game-data API. That includes the item's display name, item level, required level, quality tier, primary inventory slot, and class + subclass taxonomy. We surface the metadata so you can scan a category at a glance, sort by what matters to you, and click through to a detailed price-history view.
Pricing is collected on a regular schedule. For Retail we pull a fresh snapshot from the Blizzard auction-house API every hour. For Mists of Pandaria Classic and Burning Crusade Classic we pull from the TradeSkillMaster (TSM) data feed, which aggregates auction-house listings on a weekly cadence for MoP Classic and an hourly cadence for TBC Classic. Every snapshot is timestamped and retained, so the chart on each detail page shows real movement over weeks and months rather than a single instantaneous quote.
The category landing pages exist to make the catalog crawlable and shareable. If you bookmark a category page you can return to the same view on any realm without navigating through filters. If you link a category page to a friend, search engine, or guild forum, the link resolves to a static URL that any visitor can read without an account or saved state. Every page on the site is family-friendly and free to use; we publish category-level pages so search engines can index them the same way.
If a category contains too many items to display on one page, the table is paginated and the pagination controls appear below the list. Use the search box on the main `/database` page to narrow by item name, or pick a subcategory from the sidebar on the left to drill into a specific subclass. Every item in the category links to its full price-history page, where you can see Retail, MoP Classic, and TBC Classic pricing side-by-side when applicable. Prices update as soon as a fresh snapshot lands.