Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Could just be an error. Staples is a large company, and they sell Apple stuff, although I'm not sure how long they've been doing it.
 
Staples recently got the approval to start selling iPads and other Apple products online. I think it's a trial run and if they meet the sales requirement, then Apple would let them sell it at the retail store.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.