Delicious yes (and as others have pointed out - expensive). Low in sugar and calories, no. Grapes and pineapple especially (also pears , bananas, and apples) are high in sugar. Not as much as candy which is usually close to pure sugar, but fruit is usually a tiny bit of fiber, a large amount of water, and decent amount of sugar. It's the same thing where people don't consider the natural sugars in unsweetened milk. In moderation it's healthy and has good vitamins and protein, but it isn't calorie/sugar free.
YUMMY YUMMY