... NO,it's included in the unit price already. 3.How about the quality ?> Meet CE,FDA, Factory passed ... order ?> Yes,support sample order and small order 5.How much for 1pc sample ?> $50/pcs,if have stock> ... design team is willing to do for you 7.how long for make a sample?> 7~21days depend ... on the samples complexity 8.Does this Sample cost refundable or not?> Yes,refundable ...