Harry Potter fans, unite! Walmart has a deal on the LEGO Harry Potter Hogwarts Castle and Grounds this week, and it’s such a rare sale that more than 100 people have it in their carts already.

If you're a Harry Potter fan and a Lego fan and have recently raided Gringotts Bank, then this kit - called the Lego Hogwarts Express Collectors Edition - is the first thing you should spend your ...