Reply to @uniquedesigne: just keep in mind that it is against the rules for a buyer to work with you here on Fiverr and then place a direct order, you will get your account shut down for that. That is why I was asking.
Sure if they can then take their sample and go somewhere else, that’s fine and you do not give them any information on where to go after they bought samples from you. If you do that will not be good. Even if ou recommend a different company that is not your own, Fiverr will think you are profiting from it.