I just picked up a strawberry banana smoothie from Dunkies. Its pretty good, very sweet. Its a little too sweet in some ways, I wish it had more yogurt. It cost $3.50 for a small, which is way too expensive in my opinion. I'm not sure how many people will be buying them at that price, and I can only imagine how much the medium and large cost. Thankfully I had a $1 off coupon, which brought the price down to $2.50, which I still think is too much. 
I just ordered a Tropical Fruit smoothie. Tastes great! Supposedly these are good for you too but to me these nutrition facts seem like a lot of calories.
Tropical Fruit Smoothie Small
Nutrition Facts
Serving Size 16 fl oz
Servings 1
Calories 360
Calories from Fat 25
% Daily Value, Calories: 2,000
Total Fat 2.5g 4%
Saturated Fat 1.5g 9%
Trans Fat 0g
Cholesterol 10mg 3%
Sodium 110mg 5%
Total Carbohydrates 77g 26%
Dietary Fiber 1g 5%
Sugar 71g
Protein 7g
Vitamin A 4%
Vitamin C 160%
Calcium 25%
Iron 2%
Calories 2,000 2,500
Total Fat Less than 65g 80g
Saturated Fat Less than 20g 25g
Cholesterol Less than 300mg 300mg
Sodium Less than 2,400mg 2,400mg
Total Carbohydrate 300g 375g
Dietary Fiber 25g 30g
Calories per gram:
Fat 9
Carbohydrate 4
Protein 4
Yes its the sugar - lots and lots of sugar! 71g!