The secret way some Costco shoppers are getting the best deals
Costco has die-hard fans who know every little secret about shopping at the mega retailer; two of them even wrote a book about it.

When I moved to Indianapolis in 1994, one of the first things I looked for was a Costco. Having moved from California, where Costco runs were part of my routine, I was shocked to learn there wasn't one.
Where was I going to buy my dog food, laundry detergent, and dark roast coffee in bulk? Winco just wasn't the same (sorry, Winco).
In fact, Costco didn't make it to Indiana until 2002, years after I'd left. First thing I did when I moved back west? Renew my Costco membership.
These days, there is a Costco in almost every state (Rhode Island, West Virginia and Wyoming are still waiting), and plenty of cities have multiple locations.
The company has been expanding at breakneck speed, and is now the third-largest retailer in the world.