You can get samples that are unbranded from viaGlamour.com. You can get samples with your logo on the products by ordering samples through your app which is accessible by first creating a free Shopify store (viaGlamour.com/shopify/install) and then purchasing samples through the viaGlamour app (viaGlamour.com/shopify/install). Samples have a range of costs depending on the products you order, where they are being shipped, and the weight of your package.