This page narrows Gem down to Spirit only, so the table stays scoped to one subtype instead of the full category list.
Each Spirit row links to a detail page showing the current minimum buyout, the average and median sale price, and total quantity listed. The realm selector compares the same item across servers, and the edition selector appears wherever an item exists in more than one game version.
Sort the table by item level or required level to find what matters for your character, or click through to any row for its full price-history chart across realms and game versions.