To find the price per pint of juice, we first need to convert gallons to pints.
1 gallon is equal to 8 pints. Therefore, to find out how many pints are in 3 gallons, we calculate:
\[ 3 \text{ gallons} \times 8 \text{ pints/gallon} = 24 \text{ pints} \]
Now that we know there are 24 pints in 3 gallons, we can find the price per pint by dividing the total cost by the number of pints:
\[ \text{Price per pint} = \frac{\text{Total cost}}{\text{Number of pints}} = \frac{26.40}{24} \]
Calculating that gives:
\[ \frac{26.40}{24} = 1.10 \]
Thus, the price per pint is:
\[ \boxed{1.10} \]