I used the OD $20 off $50 today. Printed it out and took it to the store and got a graphing calculator for my son and some school pens. Total cost $52. She punched in the code atthe bottom right hand corner and it toof off $20. With a MIR of $10 on the calculator (Casio), I wound up spending like $22 for $52 worth of stuff. The OD printed coupon can be used again and again and again.