That said, you can always go back to the retailer and ask for specifics about how many samples the retailer truly wants and if you can have the samples back, or if the samples could be part of the sales package.
Look at this as the start of the negotiation process . . . and also look how you can package your offering in a way that gives retailers a sense of what you do, at a cost point that doesn’t cut too far into your profit
All the best.