If I remember correctly, Newegg allows up to 5 dead/stuck pixels on the screen. I would bet that that is why any monitor is returned.
A quick google search turns up with a Newegg page stating that...
"it is nearly impossible to guarantee that every LCD monitor is completely free of dead pixels, especially monitors with high resolution panels. Of course, too many dead pixels are unacceptable, since they will strongly affect display quality. This is why most LCD monitor manufacturers provide their own dead pixel policy to ensure product quality. "
Newegg.com - Learning Center,LCD Monitors
Basically, Newegg doesn't cover dead pixels. The manufacturer covers the dead pixels. I suppose Newegg would warrant a return if the dead pixels were higher than the manufacturer's specifications. If not, I am not sure if Newegg will accept a RMA.