David

the first method is misleading. The item sold is the purple enchanting ink not the blue rare enchanting ink. This also requires you to be a certain level before you can purchase. This article is missing details. I think that a picture of the type of ink was left out. Intentional or not, what is happening is the blue rare enchanting ink is not available.

In this game you can dissolve items for lesser items, like reverse crafting. Dissolving the enchanting ink is not an option at this time as the game will not allow you to choose the enchanting ink to dissolve.