So it turns out Best Buy made a mistake- they say the coupon was good 1/21 only . It is up to you what you choose to do with that information.
I have seen this on enough reputable blogs and had some friends use it so I am sure that it works.
But if you happen to have a Mastercard (debit cards work too) you can’t beat this one.
Print this coupon and when you go to the Best Buy Store and use your Mastercard you will receive $50 off of $100 purchase.
Be sure to read the fine print but I have seen people using this to buy ink for their printers and other useful items!
I am going to try to use it tomorrow!
The coupon expires 1/27/13.