So, she was selling $19k worth of stuff, and claimed she was doing a good job (let's assume she's correct). Her income was $2k. So that means ~10% of Yelp's re

So, she was selling $19k worth of stuff, and claimed she was doing a good job (let's assume she's correct). Her income was $2k. So that means ~10% of Yelp's revenue is going to salespeople. Is that normal? Do salespeople normally take 10% of every sale?