That is why promotion cost so much money. But promotion must be effective not to spend money invain.
There was a lot of different projects that allow to check the origion of the goods but not all of them was successful.
There are so many projects but not all of them are useful and allow people to earn money on investment. To earn money constanly on investment it is necessary to find a project that is really useful for people and will be in demand for a long time.