So I was checking out Gamestop.ca and found out some interesting deal they had on. Evidently they are offering 50% off used accessories! The discount comes off in your cart.
The real value I see in this is perhaps in the purchase of items like a used controller (which is guaranteed to work, btw). Instead of dishing out $40 for a new XBOX 360 controller you can get a used one for only $14.99 after that $50% discount. A great price. Check out their other used accessories.
Online only deal.