To change from A liter is 1.0567 as much as a quart. So 2 liters is 1.0567 times as much as 2 quarts, so 2 liters should therefore sell for 1.0567 times as much as 2 quarts. 1.0567 times $1.29 is $1.363143. So if 2 liters sells for $1.36 it would be a little cheaper than by the quart, and if 2 liters sells for $1.37 it would be a little more expensive than by the quart. Edwin