We purchase iPhone/Samsung used stock in all grades and in quantities as small as 10 pieces and as large as 5000 pieces. To subscribe to our strong weekly price list, e-mail Dustin at cellbayinc@gmail.com. If you have stock lists of large quantities, send me your list and I will respond quickly with a take all offer. Regards, Dustin Pope President / Chief Purchasing Agent CellBay Inc.