To find the price per pint for the pineapple juice, we first need to determine how many pints are in a 2-quart carton.
1 quart is equal to 2 pints, so:
\[ 2 \text{ quarts} = 2 \times 2 \text{ pints} = 4 \text{ pints} \]
Now, we know that the 2-quart carton (which contains 4 pints) costs $3.28. To find the price per pint, we divide the total cost by the number of pints:
\[ \text{Price per pint} = \frac{\text{Total cost}}{\text{Number of pints}} = \frac{3.28}{4} \]
Calculating that gives:
\[ \text{Price per pint} = 0.82 \]
Thus, the price per pint of pineapple juice is $0.82.