I have been a GM counterman for about 17 years....... I have worked a a few different dealers...... Each one has been base plus commission..... Generally $1500 base and 2% or 2.5% gross to start. One dealer I left, the base went to $2000 plus 2%.
I would never work for a dealer that paid individual commission, that creates a hostile work invironment!!
If you have a lazy parts guys, you need a new one!!!!