Absolute Systems allocates manufacturing overhead based on machine hours. Each connector should require 10 machine hours. According to the static budget, Absolute expected to incur the following:

800 machine hours per month (80connectors x 10 machine hours per connector)

$5,000 in variable manufacturing overhead costs

$9,450 in fixed manufacturing overhead costs

During August, Absolute actually used 750 machine hours to make 120 connectors and spent $ 5,100 in variable manufacturing costs and $ 8,000 in fixed manufacturing overhead costs. Calculate the variable overhead cost variance for Absolute.