I worked in a big sports store, paid 4.5 % commision on top of an 8$ salary. I was easily the best salesman because I could take the bikes and explain anything on them. I was making good coin for the time, I think around 2000-3000$ take home a month. But then I was a bachelor and just relaxing after moving out west. I sure wasn't looking for a career...
I couldn't survive on that now with a gf, 3 bikes and higher rent.