Hey Brian, I don't think you worded that right. If he wants to use a piece of artwork , say from VectorStock. He can use it as much as he wants. But if he's looking to use it so that as no one else can use it. Then he would need a exclusive license. But if you get something from a site that you pay for. You can use it as many times as you want to create designs for a client. They are not "buy once, use once" agreements. As far as I know. Any thoughts? Maybe I am mistaken....