I think slippery is too kind. Either they are very naive, or intentionally dishonest. They make claims that are very dubious, as well as claims that are simply false.
For example, they claim that brushing and rolling results in a thicker paint film, thereby implying a better finish. The Paint Quality Institute has done many tests on this, and has found that spraying is actually better in many situations.
If thicker is better, why do they only do one coat, particularly when the manufacturer recommends 2 coats? And if thicker is better, then why not apply 10 coats? That would certainly be thicker.
How do they know what others charge? How do they know how long it takes other companies to do the job? How do they know the material costs of other companies? What is bar wood?
Brian Phillips