Office Depot only PM's within 7 days of purchase, and usually only to local stores.
I.e. I got mine from office depot because I could show them the reciept from the open box one I got at radio shack, and then return the opened one to radio shack.
Sears is much better with their PM's. They do match online, and I think within 30 days.
If I had a recent reciept I would help you but mine is from December 1.