A company has the following budgeted costs and revenues: $ per unit Sales price 50 Variable production cost 18 Fixed production cost 10 In the most recent period, 2,000 units were produced and 1,000 units were sold. Actual sales price, variable production cost per unit and total fixed production costs were all as budgeted. Fixed production costs were over-absorbed by $4,000. There was no opening inventory for the period. What would be the reduction in profit for the period if the company has used marginal costing rather than absorption costing?