Yeah, I'm confused too. My understanding from the article is that you can buy this [Dust of Disappearance] at (Beta) 10G something and it requires the inscriber 2 x [Black fallow Inks] to make the same. Your gonna buy the herbs tho, not the inks (to make the inks right?) and its unlikely that the herbs will cost less than the purchase price of the end product from the vendor for quite some time into the expansion... how are you gonna make money on this right away?
(sry if mis-read your description)

Just to make clear, I'm asking this question to the Article writer, not Rufio... just replying to make the "me too" statement, as an addition to Rufio's original post.

The cost of the Dust of Disappearance is 10g at the inscription vendor. It takes a scribe two inks to make the 80+ Dust. As you can get 6 inks from a stack of herbs the price of a stack will need to drop below 30g (6 ink per stack / 2 ink per dust x 10g) before scribes could make money and beat the vendor price. That isn't going to happen any time soon.