Some things always come in quarts: milk, motor oil, and mayonnaise, for example. You don't have to look at the net weight statement, because a quart is 32 ounces, and that is what you always get. All mayonnaise has come in quart jars for decades.
What is the biggest size of mayonnaise?
Hellmann's Extra Heavy Mayonnaise - 1 Gallon Container.
What is the average price of mayonnaise?
The average price of store-bought mayonnaise is around 0.16$ per fl oz.