What makes caged pets unusual is scope: a pet learned on one character is accountwide, and the pet-collection systems reach across realms, so pet values equalize between servers far more than gear or commodity prices do. A caged pet is one of the few items whose fair price you can sensibly compare against another realm's chart — and the realm selector on each detail page makes that comparison one click.
Supply routes shape each pet's market. Wild-caught pets can be leveled and caged by anyone, so their prices sit low and stable. Drop-sourced and achievement-gated pets arrive slowly, hold higher floors, and step downward as more of the player base earns access. Promotional and event pets behave like the holiday items they resemble — dormant most of the year, active when their source returns.
Level and quality do the fine-grained pricing within a single pet: a level-25 rare-quality cage saves the buyer days of leveling and prices accordingly, while a level-1 common of the same species trades near its floor. Breed adds a third axis collectors pay for — two cages of the same species at the same level can carry different stat spreads, and the sharper breeds command premiums the listing name alone will not explain; duplicate cages of common species, by contrast, often sit unsold at any price. The game also caps how many of one species an account can hold, which limits hoarding and keeps single-species corners rare. The history chart on each pet's page shows the spread settling as supply of leveled cages accumulates.
The battle-pet system belongs to Retail, where snapshots land hourly from the Blizzard auction-house API, so cage listings and the chart stay close to live. To find a specific pet, the search box on the item database home page narrows by name; the table below covers every caged pet currently tracked in the catalog.