If you have run into Buy in World of Warcraft and moved on without quite understanding it, this is the explanation.

Short answer

It is worth understanding once properly, because a lot of other things in World of Warcraft refer back to it.

  • Treat wiki trivia sections as trivia rather than mechanics.
  • Ignore the myth attached to it; it has never held up.
  • Write down what you changed, so you can undo exactly one thing if it goes sideways.

Twenty years of expansions mean half the advice online describes a version that no longer exists. Whether it is worth going out of your way for depends entirely on how you are playing. The name is descriptive if you already know what it does, and opaque if you do not.

Common misunderstandings

The community wisdom on this is roughly half right, and the half that is wrong costs the most time. Its role has changed across updates, so older discussion describes something slightly different. It shows up in more places than its introduction suggests, once you know to look. The developers have changed their mind about this at least once, which explains the older advice.

It became noticeably more relevant after a change the patch notes barely mentioned. Most guides mention it in passing and none of them stop to define it. Nothing here assumes a particular playstyle beyond wanting the thing to work.

How it connects to the rest of World of Warcraft

If you only remember one thing about it, remember where it appears. The game introduces it quickly and assumes you picked it up, which is where the confusion starts. It helps to understand why a step exists, because then you can adapt it when your situation is slightly different.

  • Do not confuse it with the similarly named thing — that mix-up drives most bad advice.
  • Ask what it is for before asking how to get it.
  • Check the version you are actually running before assuming anything is broken.
  • Do not build a plan around it before you have seen it work.
  • Check which version of World of Warcraft any discussion of it is describing.

Why people keep asking about it

It is more consequential in the late game than the early one, which is why first impressions mislead. It rewards understanding rather than grinding, which is unusual for World of Warcraft. There is no hidden trick here that the game is keeping from you. It appears in supplementary material in more detail than it does in the game itself.

There is a persistent myth attached to it that has never been true in any version. World of Warcraft is not shy about hiding useful information two menus deep, so some of this is simply knowing where to look. The in-game description is technically accurate and practically useless.

Whether it is worth going out of your way for

Community shorthand around it has drifted far enough from the original meaning to cause arguments. Screenshots age faster than text, which is why this describes rather than shows. Early impressions of it are usually wrong in the same specific way.

It is the kind of thing veterans forget they ever had to learn. The short version is near the top on purpose; the reasoning is there if you want to know why. Knowing this does not make you better at World of Warcraft, but it does make the rest of it legible.

How it has changed over time

The wiki entry is thorough and buries the actually useful part six paragraphs down. The awkward part is rarely the step itself, it is knowing which step comes first. Its practical value is narrow and real, rather than broad and theoretical.

Where people go wrong

  • Grinding a method that was patched months ago because a thread still ranks well.
  • Rushing the last step, which is usually the one with the actual requirement in it.
  • Ignoring the platform-specific note and then wondering why the steps do not line up.

WoW FAQ

Do I need any mods or third-party tools for this?

No. Everything described here works with the base game on any supported platform.

Why do people disagree about it?

Usually because they are describing different versions, and occasionally because a similarly named thing exists alongside it.

Has it changed recently?

Its role has shifted across updates more than once. Anything you read without a version attached may describe an older form of it.

What if none of this works for me?

Then something in your setup differs from the assumption — version, region or platform. Check those three before anything else.

That is the whole of it — if something here stops matching World of Warcraft, the game changed, not the method.