http://www.eqtraders.com/items/show_...r=035000000000
Valerian Root
WT: 0.1 Size: SMALL
Class: ALL
Race: ALL
Stackable up to 20
NPCs sell this at 3p 1g 4s 9c
NPCs buy this at (unknown)
EQ item ID: 14230
If so, yes that's overpriced. Then again, you're probably running into the same logic used on spell prices.
Also, I believe a few have noticed some of the shaman ingredients (not ones you listed) are being vendor sold and shouldn't be.
Based on some quick research, the total cost for a gate potion based on ingredients found in plane of knowledge was 145p 6g 1s 9c.