the lack of uniformity in the physical condition of products has many consequences for reverse logistics.It means sorting and evaluation of product must be done,which is not nessesary for new product in the forward channel.It also complicates the negotiations to sell the product,and vendor concerns reduce the number of possible buyers of the product in the way not typically seen with new product.the result is that the reverse logistics of products offer many challenges and oppotunities not present with forward logistics.