UPDATE (11/20/2013): I can no longer FULLY recommend Amazon Subscribe and Save because they keep removing items eligible for the program. Until it becomes more stable, my list won’t be fully updated.
Usually, Walmart, Costco, and Target are the places I go for most of my routine shopping needs. As I’ve been keeping a spreadsheet of pricing for Costco, Walmart, and Target, I’ve discovered that with Subscribe & Save’s 20% off, some items are actually CHEAPER than Costco!
In order to help you in your search, here are the items that are currently on my Subscribe & Save list that are cheaper than Costco, or at least close enough in price, it’s not worth the extra effort to go into the warehouse to physically purchase. This list will be updated frequently because Amazon tends to change pricing on these frequently.