There are 4 quarts in a gallon. This means that 4 gallons is equivalent to 16 quarts. If 8 quarts cost $16 with the Sweet and Sour company, then 16 quarts/4 gallons cost $32 dollars. The equivalent from Lovin Lemon costs $24 for 4 gallons/16 quarts. Sweet and Sour have a higher unit price.