This is an open discussion on the value of mana thistle,
On my server a stack of mana thistle sells for 10g. Now I recognize it as a higher level herb, thottbot says 375 herbalism to pick it. So, it's a proven high level herb, and is generally pretty cheap, and much cheaper compared to the other high level herb nightmare vine. Is anyone buying up a ton to sell for expansion? Or perhaps buying a ton just to avoid using nightmare vine (assuming they produce the same pigment)? Futhermore, I've read that higher level herbs have a chance to drop 'rare' pigments (equivalent to a L. pris from a green?). Based on that chance alone it might be useful to have a few extra stacks in your bags before this is confirmed on PTR. I picked up about 20 stacks today (which was only 200 g) but I'm interested in your thoughts.