His profile shows $17.78/hr so probably around $20-25K. Depending on variations in his rate.
My hourly salary has changed a lot since my first contracts. I started around $ 9.00 USD/hour. I plan to extend the post and explain not how I have increased my rates till my current rate, but also how I dealt with employers not willing to pay more.
If you check his work history, you see that he works for a way lower number. The hourly rate in freelancer profiles are very often just for display.
If we multiply his hourly rate by the amount of hours he put, we get around $23,000.