For the Z Arena recipe in TBC, community testing points to a respawn window of about 6 to 10 minutes , with one test finding an average around 4 minutes 13 seconds and individual spawns ranging from 2 minutes 40 seconds to 7 minutes 32 seconds. Another TBC beta test saw the same kind of recipe reappear at roughly 6 minutes 20 seconds and again around 8 minutes 40 seconds.

Practical take

If you’re camping it, check back every 5 to 10 minutes. The exact timer can vary a bit by vendor and server conditions, so the safe play is to wait a little longer than the shortest reported respawn.

Why people see different timings

  • Different tests were done on different vendors/recipes, so results are not always identical.
  • Server population and other game-side timing quirks can make a spawn feel faster or slower.
  • Some older forum posts about limited vendor items mention longer timers, but those are not as specific to this TBC recipe case.

Answer in one line

Expect roughly 6–10 minutes, with some reports as fast as about 2:40 and average tests around 4:13.