This document discusses different types of commission-based pay structures: 1. Straight commission, where pay is a straight percentage of total sales. An example of 3% commission on three car sales is provided. 2. Salary plus commission, where there is a base salary plus an additional percentage earned from sales. An example of $400 monthly salary plus 2.5% commission is given. 3. Graduated commission, where the commission percentage increases as sales increase. An example commission structure of 2% on first $10,000 of sales, 3.5% on next $7,000, and 5% on sales over $17,000 is provided.