How much are you willing to pay for convenience? It may already be costing you more than you know at the grocery store. A savvy consumer advocate has shown WFAA how buying liquids in bigger volume can save big bucks.

Bottled water may be the biggest waste. A bottle of Aquafina goes for a $1.39 and a 24-pack for $8.99. For the same $8.99, your family can purchase eight Ozarka gallons of water, or receive 1,024 ounces.

That’s almost triple the volume, at the same price. Individual bottles are more convenient but it really does cost more.

Soda is almost the same. A dozen bottles, or about 144 ounces costs $4. Or for $3.76 you can receive the same brand, 268 ounces, almost a 100 percent increase.

So are you really willing to pay twice as much for the convenience of having a smaller bottle?

How about orange juice? Decades ago, frozen concentrate was common. Now, many families buy the juice ready to pour. 96 ounces of Minute Maid orange juice is regularly priced at $6.26. For the same cost of $6, you can purchase three of [frozen concentrates] and make it yourself and receive 192 ounces.

Almost 100 extra ounces of juice at the same price if you mix it yourself.

That’s a savings of almost $30 on three items alone, if you buy in a little bit bigger volume and forgo a little convenience.