When do you reward your people for less production?

I was negotiating a pay raise with my supervisor today and he actually said that he is paying one of my peers -- who works outside of the office -- a pay rate that is 7.5% higher than mine because he would be doing only 5 transactions per year. (that 5 number is pretty low for our industry)
I told him that I would accept that program. "I'll work less to earn a higher commission."

Those terms weren't cemented. We agreed on something else.

If he had agreed to that even higher raise for doing only 5 transactions for the rest of the year, it would have been my exit strategy to do them in two months and move on.