The glyph catalog is organized by class — warlock and druid carry the largest glyph books in the current data, with every other class holding a smaller set. Each entry shows the glyph's name, the class it belongs to, item level, required level, and quality tier. Click any glyph to open the price-history page for that specific entry. Glyph stock is also wide rather than deep by design: scribes historically learned glyph techniques one random research discovery at a time, so no single seller covers a class's whole book, and long-tail coverage varies scribe by scribe and realm by realm.
Glyph pricing follows a long-tail pattern more than almost any other category. A few popular glyphs trade in high volume at modest margins, while dozens of niche glyphs trade rarely and float with whoever happens to post one. The history chart separates the two instantly: a smooth line means the glyph trades frequently, a jagged line means listings are sparse and the current price is one seller's opinion.
Glyphs are also a lesson in edition boundaries. The system shipped with Wrath of the Lich King, so TBC Classic and Season of Discovery carry no glyph market at all; it is most expansive on Retail and MoP Classic — and MoP Classic's daily TradeSkillMaster feed means its glyph charts move in daily steps rather than hourly ticks, which is the expected shape of that data, not a gap.
Because every glyph is player-crafted, the glyph market ties directly back to the herb and pigment markets that feed inscription — when herb prices move, glyph floors follow with a short lag the charts make visible.