We prep the landscape, rake-level everything off spread the gravel. Labor costs depend on the size of your driveway and layer thickness of the gravel. You may also chose to tamper with a plate compactor as an available (add on) option. 

There are several types of driveway stone available from pea gravel to regular golf ball size stone including modified which is a combination of crushed stone and regular size mixed together for better packing.

Grey or red colors available too. Most local places charge $30-$40 a cubic yard plus a small delivery fee.