As an alternative to paying $3.17 for a quart of El Mexicano Drinkable Yogurt...
32 oz container of Strawberry Yogurt (Wal Mart brand - $2.47)
1 1/2 cups milk ($0.33)
1 tbsp sugar ($0.04)
Mix thoroughly. You can drop the sugar if you do not need it to be as sweet as El Mexicano.
You save 33 cents over the bottle of El Mexicano, but you actually save more since you end up with 44 oz of drink. So you actually save $1.51 over the same amount.
TIP: Mix in a blender on the highest speed for 1 minute to get rid of all the strawberry chunks so it's easy to sip through a straw.