Bought the item from a vendor
Some recipes are intended to increase your skills in that Profession rather than to create an item to sell to another player. Generally, recipes with white names are store-bought and ones with green or blue names are drops from monsters. So if you see some white recipes for sale, a person just bought the item from a vendor and is trying to re-sell it for a profit. When gathering Herbs or Mining, if you see gray dots on your mini-map those are items found below you or in a nearby cave. In the bottom left corner of the trade interface, there is an area where you can select how many of a specific item you want to create. This is very helpful when you are creating the same item repeatedly. Jade Dynasty Gold is also a Create All button that will create as many copies of the item as you can.