How Much does a Lamborghini or High end Car salesman make?

I was wondering what percentage does a high end car sales man make? For example and Bentley salesman, Lamborghini Salesman, Ferrari, etc etc ... My point is how much would someone make if they sell the high end expensive cars ...and how much should someone get for a referral? the same as a salesman?|||Figure 5% commission and average car costs $200K a year and assume 1 car sold a month (unless you're in FL, CA, NV or NY) and $120K per year is a possible salary.