The range of a set of numbers is the difference between the largest and smallest values in the set. In this case, the set of numbers is {x-3, 3x+2, x-1, 4x, 2x-1, x-2, 2x-2, 3x, 3x+1}. Since x > 0, we can see that the smallest value in the set is x-3 and the largest value is 4x. Therefore, the range of the set is 4x - (x-3) = 3x + 3.