To find out how much Jace spent on the boxes of colored pencils, we can multiply the number of boxes he bought by the cost per box.
Jace bought 60 boxes, and each box cost $9:
\[ \text{Total cost} = \text{Number of boxes} \times \text{Cost per box} = 60 \times 9 \]
Calculating this:
\[ 60 \times 9 = 540 \]
So, Jace spent a total of $540 on the boxes of colored pencils.