Herbs feed alchemy and inscription at once, so herb prices swing with raid-week consumable demand and settle between patches. Within Tradeskill, the Herb subtype gets its own tracked table here. Each row below carries its own price-history page rather than sharing a single blended entry.
Each Herb 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.
The "Browse subcategories" links on the parent Tradeskill page list every other subtype if you want to compare markets side by side.