Originally Posted by JerrySeinfeld
there is nothing cheap about a ability of getting points on serve, its a skill.
"Cheap points on serve" is a standard commentating phrase, all it means is that physically you don't have to exert a lot of energy to win the point, because the serve does it for you instantly. Nothing derogatory is implied.
Don't worry Jerry, you and I both know that it is very cheap when a certain webbed individual starts practising it.