At times parts get damaged during manufacturing but they remain a functional product. It might have a chip or scratch or blemish. We set them aside during our manufacturing and QC process. Then every 3-4 months we review to pick out the best parts that become factory seconds we offer at a discounted rate.
Most parts are reversible, and the defects are on one side, so you can often hide them.
Stock is limited, so get in quick if you don't want to miss out.