A manufacturer sells two types of paints in one gallon size containers. The manufacturer claims that one gallon of paint A covers 330 sqft and of paint B covers 300 sqft, both specifications are for a single coat of paint. In practice, a contractor determined that the manufacturer claims are true, however, one coating of paint A give a similar result as two coatings of paint B. What is the cost difference for painting an entire house (about 2,500 sqft) between applying one coat of paint A vs. two coats of paint B? Consider that paint A costs $12.99/l, paint B costs 8.49$/1, and 1 gallon = 3.8 liters.