Gayner Corporation is an oil well service company that measures its output by the number of wells serviced. The company has provided the following fixed and variable cost estimates that it uses for budgeting purposes and the actual results of operations for November. Fixed Element per Month Variable Element per Well Serviced Actual Total for November Revenue $ 4,300 $ 148,400 Employee salaries and wages $ 48,900 $ 1,000 $ 84,000 Servicing materials $ 600 $ 20,200 Other expenses $ 30,300 $ 29,600 When the company prepared its planning budget at the beginning of November, it assumed that 30 wells would have been serviced. However, 34 wells were actually serviced during November. The spending variance for "Servicing materials" for November would have been closest to: