Facebook CEO Mark Zuckerberg is just like us: He shops for bargain deals at Costco.

· Mark Zuckerberg, the CEO of Facebook, was recently spotted shopping at warehouse chain store Costco with wife Priscilla Chan.
· TMZ recently published the photo, which appears to show the married couple looking at TVs, possibly to buy, in December before the winter holidays.
· Costco is known for its low prices and bulk...