Let's assume you have created a wonderful piece of magic and you want to release it, because you really need the money. Let's further assume you find a company or a magician who is willing to sell your creation using their store or their name. And let's even assume a little more... that the item is a real big hit.
Now technically the pressure to come out with a second product is really, really high.
Many fall for that pressure and the second item often is: Badly constructed and/or stolen and/or be totally unoriginal.
Don't fall for it!