Joe C. answered 05/10/19
20+ Years Graphic Designer, Multiple Local & National Marketing Awards
Hi, congrats on getting a logo sold! It's possible I'm misunderstanding how you charged them for the initial logo, but generally, anything that turns up in the creative process, on your way to the approved artwork, already belongs to the client because they paid you for the process of arriving at the chosen logo, as well as the logo itself. They are not separate. Make sense? They paid you to create, you created. They keep the creations, you keep the fee. It is possible you came up with some other unique way to charge them for the project, but you would be shooting yourself in the foot, chasing a few $100's for work that is debatably thiers already. It decreases the likeliness they would want to participate in more work later. Not impossible, but probably not worth it. Hope this helps! ~Joe