The retail price for a box is about $3.99 but I've seen them on sale in the $2.00 to $3.00 range.
The two words I would use to describe the Magnum Double Caramel are "rich" and "sweet." All the flavors from the vanilla to the caramel to the chocolate are quite rich and the combination of chocolate and caramel (especially the caramel) make the whole affair really sweet.
Nutritional Info - Magnum Double Caramel Ice Cream Bar - 1 bar (102g)
Calories - 360 (from Fat - 200)
Fat - 22g (Saturated Fat - 16g)
Sodium - 80mg
Carbs - 37g (Sugar - 34g)
Protein - 4g