Most popular brands of test strips are manufactured and sold in two forms: Retail and NON-Retail
Retail boxes are the ones you see behind the counter at pharmacies and medical supply stores. These can be purchased and sold without restriction.
Non-Retail boxes are restricted to particular channels and buyers, making them more difficult to resell and thus less valuable.
Freestyle Lite 50 Count RETAIL Freestyle Lite 50 Count NON-RETAIL
Freestyle Lite 50 Count RETAIL
Freestyle Insulinx 50 Count NON-RETAIL