Learn Where to Get the Best Grocery Deals

July 15, 2008 — -- At a time when the prices of food staples are increasing at a rapid and drastic pace — milk alone is up 7 percent — consumers are scouring newspapers, stores and the Internet for the best food deals.

But with so many options like grocery stores, warehouses and online stores, it can be difficult to figure just which place will give you the best deal. So "Good Morning America" sampled all three to determine where you can get the best bang for you buck.

Check out how they size up below.

The truth is, in general warehouse stores are the least-expensive option when it comes to most goods. For example, since most items are sold at warehouse superstores in large quantities, you can avoid having to shop for certain items as often.

You'll want to grab items that don't spoil quickly, like cereal. "GMA" saved $2 a box on Cheerios this way.

Warehouses also give you the ability to bank bucks beyond the grocery aisles. You can save on household items and medications, too. Warehouse store Costco offers some of the biggest savings on prescription drugs.

And while most people associate buying in bulk with warehouse stores, you don't always have to buy that way. For example, you can buy milk by the gallon, and it can still be cheaper at warehouse store than a grocery store.

"GMA" saved 80 cents on a gallon of milk compared with the price at a traditional supermarket.

Also, many warehouse stores have less-expensive house brands that could save you more money. Sam's Club has Members Mark and Costco has Kirkland.

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Warehouse stores aren't the best pick for every item on your grocery list. First, you have to factor in their membership prices into what you purchase. There's usually an annual fee between $40 and $50, depending on the store.

And even though many are beginning to offer organic selections, these may spoil faster because they are in bigger containers. You'll have to ensure you use it all before it goes bad.

Online stores are a great place to purchase dry goods. We compared a few of their dry good items and found that although they are not always cheaper than at warehouse stores, they are cheaper than at your local grocery store.