GearBox VS GearMotor

What is the differences between the GearBox and the GearMotor.
On AndyMark.com we saw that the prices are different and we don’t know what is actually the cons and the pros of each one of them. Is there any big of a diffrence between those two and does it justifies the price?

If you’re talking about the PG71, then the gearmotor comes with a motor already attached, ready to slap on your robot.

The gearbox is only the gearbox, no motor. You’ll need to buy a motor separately, press a pinion on the motor, and attach it to your gearbox. The only advantage here is if you want to use a different motor with the gearbox for some reason.