Thank you for all the replies. I think I stated in my first post that the group I sew for requested table runner/placemat SETS to sell at a craft fair. Based on what you all have said, I will continue to sew matching runners and placemats but I will keep them separate, priced separately. If an individual chooses to purchase a set of placemats and a runner, made out of the same fabric, they can do so. But it seems many other customers will buy pieces instead. I would not have known this without your valuable feedback.